Chapter II: Preface (2)

Cot-tage, _bwthyn_, _bwth_, _caban_

Cot-ton, _cotwm_; _cotymaidd_: _cotymu_

Coul-ter, _cylltyr_, _cwlltyr_

Coun-cil, _cynghor_; _eisteddfod_

Coun-sel, _cynghor_, _cyfarwyddyd_: _cynghori_

Count-er, _rhifwr_; _yn groes_; _cyferbyniol_

Count-ess, _iarlles_

Coun-try, _gwlad_, _bro_, _ardal_, _tir_

Coun-ty, _rhandir_, _swydd_, _sir_; _rhandirol_

Cou-ple, _par_, _dau_, _cwpwl_: _cyssylltu_; _cyplysu_

Cour-age, _dewrder_, _gwroldeb_

Cours-ing, _hela_, _heliad_

Courte-sy, _ymostyngiad_; _glinblygu_

Cous-in, _cefnder_, _cyfnither_

Cov-er, _clawr_, _cauad_: _toi_, _gorchuddio_

Cov-ert, _cuddfa_, _gwas-godfa_; _cudd_, _dirgel_

Cov-et, _chwennychu_; _cybyddu_

Co-vey, _nythaid_; _haid_

Cow-ard, _anwr_, _cachgi_; _anwraidd_: _digaloni_

Crab-bed, _anfoddog_, _croes_, _sarug_

Cra-dle, _cryd_; _dechreufa_: _siglo cryd_

Crafts-man, _crefftwr_, _celfyddydwr_

Craf-ty, _cyfrwys_, _dichellgar_

Cra-ter, _llosgorel_, _cegfa_, _ceg llosgfal_

Cre-ate, _creu_; _gwneuthur_; _peru_; _urddo_

Crea-ture, _creadur_

Cred-it, _coel_, _cred_: _coelio_, _credu_

Cres-cent, _cilgant_, _hanner lloer_; _cynnyddol_

Crev-ice, _breg_, _agen_, _hollt_: _agenu_, _hollti_

Cri-er, _criwr_; _cyhoeddwr_

Crim-son, _rhudd_, _rhuddgoch_: _rhuddo_, _cochi_

Crip-ple, _cloff_, _efrydd_: _cloffi_, _efryddu_

Cri-sis, _eithafnod_; _argyfwng_

Crit-ic, _beirniad_; _beirniadol_: _beirniadu_

Crotch-et, _crymfach_; _corfanig_

Crown-ing, _coroniad_; _perffeithiad_

Cru-el, _creulawn_, _ffyrnig_, _ysgeler_

Crum-ble, _briwio_, _briwsioni_

Cru-sade, _croessawd_, _rhyfel y groes_

Crys-tal, _crisial_; _crisialaidd_

Cube-root, _trysawdd_; _trysoddiaeth_

Cu-bit, _cufydd_, _cyfelin_

Cuc-koo, _cog_, _y gog_; _cethlydd_

Cud-gel, _pastwn_, _clwpa_: _pastynu_

Cul-prit, _cyhuddog_; _troseddwr_

Cul-ture, _diwylliad_; _gwrteithiad_; _addysg_

Cun-ning, _cyfrwysder_; _cyfrwys_

Cu-rate, _curad_; _offeiriad plwyf_

Cur-rent, _rhediad_, _ffrwd_; _cylchredol_

Cur-tail, _cwtogi_, _byrhau_, _talfyru_

Cur-tain, _croglen_; _cysgodlen_: _croglenu_

Cus-tom, _defod_, _arfer_; _toll_: _cynnefino_

Cut-lass, _anglas_, _crymgleddyf_, _bidog_

Cut-ler, _cyllellwr_; _gof cyllyll_

Cut-ter, _torwr_; _ysgafnlong_

Cy-cle, _cylch_, _chwyl_; _cylchred_

Cyg-net, _alarchen_, _cyw alarch_

Cy-press, _ffyllwydd_, _cypreswydd_

Dai-ly, _beunyddiol_, _beunydd_; _o ddydd i ddydd_

Dain-ty, _danteithfwyd_; _moethus_

Dai-ry, _llaethdy_; _hafotty_

Dai-sy, _llygad y dydd_, _swynfri_

Dam-age, _niwed_, _colled_; _cost_: _niweidio_, _drygu_

Dam-sel, _llangces_; _herlodes_, _hogen_

Dan-ger, _perygl_: _peryglu_

Dar-ing, _beiddiad_, _hyf_, _anturiol_

Dark-en, _tywyllu_, _duo_, _cymmylu_

Dark-ness, _tywyllwch_; _cysgod_; _niwl_

Da-tive, _rhoddiadol_, _rhoddedigol_

Daugh-ter, _merch_; _llangces_

Daunt-ed, _synedig_, _ofnus_

Daunt-less, _calonog_, _hyf_, _diarswyd_

Day-book, _dyddlyfr_

Day-break, _gwawr_

Day-light, _goleuni dydd_; _dyddwawl_

Daz-zle, _serenu_, _pelydru_, _dallu_

Dea-con, _gwas_, _gwasanaethwr_; _diacon_

Dead-ly, _marwol_, _angeuol_; _yn farwol_

Deaf-ness, _byddarwch_, _byddardod_

Deal-ing, _masnach_, _trafnid_; _negeswriaeth_

De-bar, _attal_, _rhwystro_; _gwahardd_

De-base, _iselu_, _iselhau_, _gwaethygu_

De-bate, _dadl_; _ymresymiad_: _dadlu_

De-bauch, _llygru_, _halogi_, _gloddesta_

Deb-it, _dyled_: _dyledu_

Debt-or, _dyledwr_; _dyledog_

De-camp, _dadwersyllu_; _cilio_, _ffoi_

De-cay, _dadfail_; _gwendid_: _dadfeilio_; _gwanhau_

De-cease, _marwolaeth_, _ymadawiad_: _marw_

De-ceit, _twyll_, _hoced_, _ffalsedd_, _dichell_

De-ceive, _twyllo_, _hudo_, _siomi_

De-cent, _gweddaidd_, _addwyn_, _prydferth_

De-cide, _penderfynu_, _dybenu_

De-clare, _mynegi_, _hysbysu_, _cyhoeddi_

De-cline, _darfodedigaeth_: _gogwyddo_; _adfeilio_

De-coy, _hud_; _deniad_: _hudo_; _twyllo_

De-crease, _lleihâd_; _byrhâd_: _lleihau_, _treio_

De-cree, _gorchymmyn_, _deddf_: _barnu_; _deddfu_

De-cry, _goganu_, _difrio_, _cablu_

De-duce, _erthynu_, _tynu_, _casglu_

De-duct, _tynu o_; _tynu ymaith_; _erthynu_

De-face, _anffurfio_, _anharddu_; _llygru_

De-fame, _enllibio_, _athrodi_, _absennu_

De-fault, _diffyg_, _pall_: _diffygio_, _pallu_

De-feat, _dadymchweliad_: _dymchwelyd_; _trechu_

De-fect, _diffyg_, _gwall_, _eisiau_

De-fence, _amddiffyn_; _nawdd_; _gwrthwynebiad_

De-fend, _amddiffyn_, _diogelu_; _gwahardd_

De-fer, _oedi_, _gohirio_; _cyfeirio_

De-file, _trawien_, _culffordd_: _halogi_, _llygru_

De-fine, _dosbenu_, _darlunio_, _amlygu_

De-form, _anffurfio_, _aflunio_, _hacru_

De-fraud, _twyllo_, _hocedu_; _siomi_

De-fray, _talu_, _dwyn cost_, _digostio_

De-fy, _herio_, _beiddio_; _dirmygu_

De-grade, _diraddio_, _diswyddo_; _iselu_

De-gree, _gradd_, _urdd_; _mesur_

De-ist, _duwiad_; _anffyddiwr_

De-ject, _prudd_, _digalon_: _gostwng_, _iselu_

De-lay, _oed_, _aros_, _arosiad_: _oedi_, _gohirio_

De-light, _hyfrydwch_: _difyru_; _boddloni_

De-lude, _twyllo_, _hudo_, _siomi_

Del-uge, _dylif_, _diluw_: _dylifo_, _gorllifo_

De-mand, _gofyniad_; _galwad_: _gofyn_, _holi_; _mynu_

De-mean, _ymddwyn_, _ymarweddu_

De-mesne, _maenor_; _tiriogaeth_, _treftadaeth_

De-mise, _gosodiad_; _marwolaeth_: _trosi_; _ewyllysio_, _cymmynroddi_

De-mon, _cythraul_; _ellyll_

De-mur, _oed_, _gohiriad_: _oedi_, _gohirio_, _ammeu_

De-note, _dynodi_, _nodi_; _arwyddocäu_

De-nounce, _cyhoeddi_, _mynegi_; _hysbysu_

Dent-al, _deintiol_, _danneddol_

De-ny, _gwadu_; _nacäu_; _gomedd_

De-part, _ymadael_, _cilio_: _marw_

De-pend, _dibynu_, _ymddibynu_; _ymddiried_

De-pict, _darlunio_, _delweddu_

De-plore, _cwyno_, _galaru_; _gresynu wrth_

De-port, _arwedd_, _agweddu_; _trosglwyddo_

De-pose, _diswyddo_; _tystio_; _tystio ar lw_

De-pot, _ystorfa_, _ystordy_; _cadystorfa_

De-prave, _llygru_, _halogi_, _aflanhau_

De-press, _gostwng_, _iselu_; _gwasgu_; _tlodi_

De-prive, _difuddio_, _amddifadu_; _ysbeilio_

De-pute, _dirprwyo_, _cenadu_; _anfon_

De-range, _annhrefnu_, _dyrysu_

De-ride, _gwatwar_; _dirmygu_

De-rive, _tarddu_, _deillio_; _dyfod_

Des-ert, _anialwch_, _diffeithwch_

De-scend, _disgyn_; _gostwng_; _hanu_, _tarddu_

De-scent, _disgyniad_; _disgynfa_; _tarddiad_

De-scribe, _darlunio_; _amlygu_; _ysgrifenu_

De-scry, _canfyddiad_: _canfod_; _chwilio_; _amlygu_

Des-ert, _haeddiant_: _gadael_; _cilio_

De-serve, _haeddu_, _teilyngu_; _ennill_

De-sign, _bwriad_; _dyfais_: _bwriadu_, _amcanu_

De-sire, _dymuniad_, _awydd_: _dymuno_; _deisyf_

De-sist, _peidio_, _ymattal_; _aros_, _sefyll_

De-spair, _anobaith_: _anobeithio_

De-spatch, _brys_; _bryslythr_: _brysio_; _cyflawni_

De-spise, _dirmygu_, _diystyru_

De-spite, _mig_, _malais_: _blino_, _sarhau_

De-spoil, _ysbeilio_; _difrodi_; _lladrata_

De-spond, _anobaith_: _anobeithio_

Des-pot, _gormesdeyrn_; _brenin_

Des-tine, _arfaethu_; _darparu_; _dedfrydu_

De-stroy, _dystrywio_; _difrodi_; _lladd_

De-tach, _dydoli_, _neillduo_; _rhyddhau_

De-tail, _manwl adrodd_; _neillduoli_

De-tails, _manylion_, _neillduolion_

De-tain, _attalgwyn_: _attal_, _rhwystro_

De-tect, _dadguddio_; _canfod_; _cyhuddo_

De-ter, _rhwystro_, _attal_; _digaloni_

De-test, _ffieiddio_, _casäu_; _dirmygu_

De-throne, _diorseddu_, _dadorseddu_

De-vice, _dyfais_, _dychymmyg_

De-vise, _cymmyn_, _ewyllys_: _dyfeisio_; _cymmynu_

De-void, _gwag_; _amddifad_; _rhydd_

De-volve, _disgyn_; _treiglo_; _dygwydd_

De-vote, _cyflwyno_, _cyssegru_

De-vour, _difa_, _difrodi_, _gwastraffu_

De-vout, _duwiol_, _crefyddol_

Di-al, _orfynag_, _heulfynag_, _deial_

Dic-tate, _gorchymmyn_, _archiad_: _erchi_, _addysgu_

Di-et, _ymborth_, _lluniaeth_: _ymborthi_

Dif-fer, _gwahaniaethu_; _anghytuno_

Dif-fuse, _taenu_, _gwasgaru_; _chwyddo_

Di-gest, _rheithlyfr_: _trefnu_, _cyfansoddi_; _treulio_

Dig-ger, _cloddiwr_, _palwr_, _ceibiwr_

Dig-it, _bysfed_, _lled bys_; _unigrif_

Di-gress, _crwydro_, _gwyro_, _osgoi_

Di-late, _lledu_, _helaethu_; _taenu_

Di-lute, _teneu_: _teneuo_, _cymmysgu â dwr_

Dim-ly, _yn dywyll_; _yn bwl_

Din-ner, _ciniaw_, _prydnhawnbryd_

Diph-thong, _deuseiniad_, _dwysain_

Di-rect, _cyfeirnod_; _cyfeiriol_: _cyfeirio_

Dire-ful, _erchyll_, _dychrynllyd_; _ffyrnig_

Dirt-y, _budr_, _brwnt_: _diwyno_, _budro_

Dis-arm, _diarfogi_; _darostwng_

Dis-band, _dadfyddino_; _gwasgaru_

Dis-burse, _treulio_, _gwario_; _talu allan_

Dis-cern, _canfod_, _dirnad_, _deall_

Dis-charge, _dadlwythiad_; _rhediad_; _agorfa_: _dadlwytho_; _gollwng_, _rhyddhau_

Dis-claim, _diarddel_; _gwadu_; _dihawlio_

Dis-close, _dadgudd_: _dadguddio_, _amlygu_

Dis-cord, _anghydfod_, _amrafael_

Dis-count, _toliant_: _toll_, _dattynu_

Dis-course, _ymadrodd_, _araeth_: _ymadroddi_, _cydsiarad_, _llefaru_

Dis-creet, _call_, _synwyrol_; _cynnil_

Dis-cuss, _holi_; _rhesymu_; _amlygu_

Dis-dain, _dirmyg_: _dirmygu_; _ffieiddio_

Dis-ease, _clefyd_, _afiechyd_: _anhwylio_, _poeni_

Dis-grace, _gwarth_, _gwaradwydd_: _gwarthruddo_

Dis-guise, _lledrith_, _rhagrith_: _lledrithio_, _ffugio_

Dis-gust, _gwrthflas_; _ffieiddrwydd_: _diflasu_; _ffieiddio_; _digio_

Dis-joint, _dadgymmalu_; _gwahanu_

Dis-like, _anhoffder_: _casineb_: _anhoffi_; _casäu_

Dis-lodge, _dilochesu_; _symmud_, _mudo_

Dis-mal, _erchyll_, _galarus_; _ofnadwy_

Dis-may, _dychrynu_, _llyfrhau_

Dis-miss, _gollwng_, _rhyddhau_; _diswyddo_

Dis-mount, _disgyn_; _dadymchwelyd_

Dis-own, _gwadu_, _diarddelwi_; _dihawlu_

Dis-pel, _gwasgaru_, _taenu_; _gyru ar ffo_

Dis-pense, _cyfranu_, _dosbarthu_; _hebgor_

Dis-perse, _gwasgaru_, _chwalu_; _dosbarthu_

Dis-place, _dilëu_, _symmud_; _diswyddo_

Dis-play, _arddangosiad_: _arddangos_; _darlunio_

Dis-please, _anfoddio_; _tramgwyddo_; _casäu_

Dis-pose, _trefnu_, _dosbarthu_; _tueddu_; _gwerthu_

Dis-pute, _dadl_: _dadleu_; _gwrthwynebu_

Dis-sent, _anghytundeb_, _neillduaeth_: _anghytuno_; _ymneillduo_

Dis-solve, _toddi_, _dadmer_, _dadgorffori_

Dis-taff, _cogel_, _cogail_

Dis-tance, _pellder_, _meithdra_: _pelläu_

Dis-tant, _pell_, _pellenig_; _oeraidd_

Dis-tend, _helaethu_, _estyn_; _mwyhau_

Dis-til, _dystyllio_, _defnynu_; _toddi_

Dis-tinct, _gwahanol_, _neillduedig_; _eglur_

Dis-tract, _croesdynu_; _poeni_; _gwallgofi_

Dis-train, _gafaelu_, _attafaelu_; _codi da_

Dis-traint, _gafaeliad_, _attafaeliad_

Dis-tress, _cyfyngder_, _ing_: _cyfyngu_, _cystuddio_

Dis-trict, _cylchdaith_; _tiriogaeth_, _ardal_

Dis-trust, _anymddiried_: _anhyderu_

Dis-turb, _aflonyddu_, _blino_

Dis-use, _anarfer_: _anarferu_

Dit-to, _yr un_, _yr un peth_; _eto_

Di-verge, _ymwasgaru_, _lledwyro_

Di-vers, _amryw_, _llawer_, _aml_

Di-verse, _amrywiol_; _gwahanol_; _amgen_

Di-vert, _difyru_, _boddhau_; _gwyro_

Di-vest, _dihatru_, _diosg_; _difuddio_

Di-vide, _rhanu_, _cyfranu_; _ysgar_, _ymagor_

Di-vine, _duwinydd_; _dwyfol_: _dewinio_; _dyfalu_

Di-vorce, _ysgariaeth_: _ysgaru_; _dadbriodi_

Di-vulge, _cyhoeddi_; _dadguddio_, _amlygu_

Diz-zy, _syfrdan_, _penchwiban_

Do-cile, _hyddysg_; _dof_, _hynaws_

Doc-tor, _doethor_, _dysgawdwr_: _meddyg_: _meddygu_; _doctora_

Doc-trine, _athrawiaeth_; _dysgeidiaeth_

Do-er, _gwneuthurwr_, _gweithredydd_

Do-ing, _gweithred_: _yn gwneuthur_

Dole-ful, _tristlawn_, _galarus_

Do-main, _tiriogaeth_; _etifeddiaeth_

Do-nor, _rhoddwr_, _rhoddiad_

Dor-mant, _swmer_; _cysgadwr_; _cysgedig_

Dor-mouse, _pathew_, _marwgwsg_

Dou-ble, _plyg_; _dyblyg_; _yn ddeublyg_: _plygu_

Doub-ling, _dyblygiad_; _ymdro_

Doubt-ful, _amhëus_; _ansafadwy_

Down-fall, _cwymp_, _codwm_; _dinystr_

Do-zen, _deuddeg_, _dwsin_

Drafts-man, _tyniedydd_, _darluniwr_

Dra-gon, _draig_; _dragon_

Dra-goon, _marchfilwr_: _gormesu_

Drain-age, _dyhysbyddiaeth_

Dra-per, _golofydd_; _brethynwr_; _llieiniwr_

Draw-er, _tynwr_; _lluniedydd_; _llogell_

Draw-ing, _tyniad_, _llusgiad_; _darluniad_

Dread-ful, _ofnadwy_, _erchyll_, _arswydlawn_

Dro-ver, _porthmon_; _gyrwr_

Drow-sy, _cysglyd_, _swrth_; _diog_

Dru-id, _derwydd_

Drum-mer, _tabyrddwr_, _rhuglenwr_

Drunk-ard, _meddwyn_, _diotwr_

Dry-ing, _sychiad_, _crasiad_; _sychol_

Dry-ness, _sychder_; _crinder_

Duck-ling, _hwyaden_, _cyw hwyad_

Duc-tile, _hydyn_, _ystwyth_; _estynadwy_

Du-el, _ornest_; _ymryson_: _ymladd ornest_

Duke-dom, _dugiaeth_, _duciaeth_

Dull-ness, _hurtrwydd_; _pylni_; _tywyllni_

Du-ly, _yn ddyladwy_; _yn addas_; _yn brydlawn_

Dun-geon, _daiardy_; _dyfngell_: _carchargellu_

Dung-hill, _tomen_, _teilfa_; _tomenaidd_

Du-ring, _yn parhau_; _parhäus_; _hyd tra_

Dust-y, _llychlyd_, _llychwin_

Dutch-ess, _duges_

Du-ty, _dyledswydd_; _swydd_; _toll_, _treth_

Dwell-ing, _preswylfod_; _ty annedd_: _yn preswylio_

Dwin-dle, _dihoeni_, _diflanu_; _gwanychu_

Dy-er, _lliwydd_, _lliwiwr_, _llifwr_

Dye-ing, _lliwiad_; _lliwyddiaeth_

Ea-ger, _taer_, _awyddus_, _gwangcus_

Ea-gle, _eryr_

Earl-dom, _iarllaeth_

Ear-ly, _cynnar_; _boreuol_; _yn gynnar_; _bore_

Earn-est, _difrifoldeb_; _difrif_, _diwyd_; _taer_

Earn-ing, _ennill_, _cyflog_; _ennilliad_

Ear-ring, _clustlws_, _clustfodrwy_

Earth-en, _priddin_, _pridd_, _priddol_

Earth-ly, _daiarol_: _bydol_; _gwael_

Earth-quake, _daiargryn_, _daiargryd_

Earth-worm, _amwydyn_, _abwydyn_

Ear-wig, _pryf clust_, _clustchwilen_

Ea-sel, _attegydd_, _attegyr_

East-er, _Pasc_; _gwyl y Pasc_

East-ern, _dwyreiniol_; _tua'r dwyrain_

East-ward, _yn ddwyreiniol_

Eas-y, _hawdd_, _esmwyth_, _rhwydd_

Ech-o, _adsain_, _ateblais_: _adseinio_

E-clipse, _diffyg_; _arguddiad_: _cymmylu_; _arguddio_

Ed-dy, _trobwll_; _adlif_: _dystroi_; _cylchdroi_

E-dict, _rheitharch_, _teyrnarch_, _cyhoeddiad_

Ef-face, _dilëu_, _anffurfio_, _dinystrio_; _tywyllu_

Ef-fect, _effaith_; _dyben_: _effeithio_; _dichon_

Ef-fects, _da_, _daodd_, _moddion_; _nwyddau_

Ef-fort, _ymdrech_, _ymgais_, _egni_

E-gress, _mynedfa_, _mynediad allan_

Ei-ther, _un ór ddau_; _y ddau_; _naill ai_

E-ject, _taflu allan_; _difeddiannu_

E-lapse, _llithro_, _myned heibio_; _darfod_

E-late, _dyrchafedig_, _derchafedig_: _dyrchafu_

El-bow, _elin_, _penelin_: _penlino_

Eld-er, _hyn_, _hynach_; _hynaf_

Eld-er, _henuriad_, _hynafgwr_; _ysgaw_

Eld-est, _hynaf_, _cyntafanedig_

E-lect, _etholedig_: _ethol_, _dewis_

E-lope, _cilio_, _encilio_; _diangc_

Else-where, _mewn lle arall_; _mewn manau ereill_

E-lude, _diangc_, _diengyd_; _siomi_

Em-balm, _perarogli_; _cyweirio corff marw_

Em-bark, _llongi_, _morio_; _cychwyn_

Em-bers, _marwor_, _ulw_, _eirias_

Em-blem, _arwyddlun_: _arwyddlunio_

Em-brace, _cofleidiad_: _cofleidio_

E-merge, _dadymsuddo_; _deilliaw o_

E-mit, _bwrw allan_; _saethu_; _pelydru_

Em-met, _morgrugyn_, _mywionyn_

Em-pale, _amgau_, _argau_; _pawlwanu_

Em-pire, _amherodraeth_; _teyrnas_

Em-ploy, _gorchwyl_: _gorchwylu_; _rhoi ar waith_

Em-press, _amherodres_, _ymherodres_

Emp-ty, _gwag_; _heb ddim_: _gwaghau_; _tywallt_

En-act, _deddfu_; _gosod_, _trefnu_

En-camp, _gwersyllu_; _ymfyddino_

En-chant, _swyno_, _dewinio_; _hudo_

En-close, _amgau_, _amgylchu_; _goblygu_

En-croach, _cyfyngu_, _gormesu_; _rhuthro_

En-dear, _anwylo_, _anwylhau_

End-ing, _diweddiad_, _terfyniad_

End-less, _diddiwedd_, _diderfyn_, _diddarfod_

En-dorse, _cefnysgrifo_; _cymmeradwyo_

En-dow, _gwaddoli_, _cynnysgaeddu_; _addurno_

En-due, _cynnysgaeddu_; _gwisgo_; _rhoddi_

En-dure, _parhau_; _goddef_, _dioddef_

En-force, _grymuso_, _cadarnhau_; _treisio_

En-gage, _rhwymo_; _ennill_; _cytuno â_

En-graft, _impio_, _bywyllu_

En-grave, _cerfio_, _argraffu_

En-gross, _rhagbrynu_; _brasysgrifenu_

En-hance, _cyfodi_; _mwyhau_; _cynnyddu_

En-join, _gorchymmyn_; _cyfarwyddo_

En-joy, _mwynhau_; _perchenogi_

En-large, _helaethu_, _chwanegu_; _rhyddhau_

En-list, _rhestru_; _rhestru yn filwr_

E-nough, _digon_; _yn ddigonol_

En-quire, _gofyn_, _holi_; _ymgynghori_

En-rage, _llidio_, _cyffroi_; _ffyrnigo_

En-rich, _cyfoethogi_; _ffrwythloni_

En-rol, _coflyfru_, _cofrestru_

En-sign, _baner_, _lluman_; _banerwr_

En-slave, _caethiwo_; _difreinio_

En-snare, _maglu_, _rhwydo_

En-sue, _canlyn_, _dilyn_

En-sure, _diogelu_, _yswirio_

En-tail, _rhwymddisgyniad_: _hawlrwymo_

En-ter, _myned i mewn_; _dechreu_; _llyfru_

En-throne, _gorseddu_, _gorseddfeingcio_

En-tice, _hudo_, _denu_; _twyllo_

En-tire, _cyfan_, _cwbl_; _perffaith_

En-trails, _coluddion_; _rhanau mewnol_

En-trance, _mynediad_; _cychwynfa_

En-trap, _maglu_, _rhwydo_; _twyllo_

En-treat, _atolwg_, _atolygu_, _erfyn_

En-try, _cyntedd_, _dyfodfa_; _coflyfriad_

En-voy, _llysnegesydd_, _negeswr_, _cenad_

En-vy, _cenfigen_, _casineb_: _cenfigenu_

E-poch, _prifnod_, _prifnod amser_

E-qual, _cydradd_; _cyfartal_: _cyfartalu_

E-quip, _taclu_, _arfogi_; _gwisgo_

E-ra, _prifnod_, _amser gyff_

E-rase, _dilëu_: _crafu ymaith_

E-rect, _unionsyth_; _uniawn_: _cyfodi_; _adeiladu_

Er-rand, _neges_, _cenadwri_; _gorchwyl_

Er-ror, _cyfeiliornad_; _gwall_; _camwedd_

E-scape, _diangfa_; _ymryddhâd_: _diangc_, _ffoi_

Es-cort, _canymdo_, _nawddlu_: _gosgorddi_

E-spouse, _dyweddio_; _amddiffyn_

Es-quire, _yswain_: _cludydd arfau_

Es-say, _prawf_; _traethawd_: _profi_; _anturio_

Es-sence, _sylwedd_; _anian_: _arogli_

Es-tate, _cyflwr_, _ansawdd_; _etifeddiaeth_: _sefydlu_

Es-teem, _cyfrif_, _parch_: _ystyried_, _anrhydeddu_

Etch-ing, _ysgerfiad_, _crafluniad_

E-ther, _nyfel_, _uchawyr_; _nyfelwy_

Eth-ics, _moesddysg_, _moesoni_

E-vade, _gochel_, _diangc_

E-ven, _hwyr_; _gwastad_, _llyfn_; _cyfartal_: _gwastatäu_; _cyfartalu_; _nid amgen_

E-vent, _dygwydd_, _dygwyddiad_; _canlyniad_

Ev-er, _byth_, _yn dragywydd_, _bob amser_

E-vil, _drwg_, _aflwydd_; _drygionus_; _yn ddrwg_

E-vince, _arddangos_, _profi_; _amlygu_

E-volve, _dadblygu_, _agor_, _ymagor_

Ew-er, _dyfrlestr_; _ystên_; _crothogen_

Ex-act, _manwl_, _cywir_: _mynu_; _gofyn_

Ex-alt, _dyrchafu_, _codi_; _mawrhau_

Ex-ceed, _rhagori_, _blaenori_; _myned dros_

Ex-cel, _rhagori_, _blaenori_, _amgenu ar_

Ex-cept, _ond_, _eithr_, _onid_; _oni byddai_: _eithro_, _gwrthod_; _cau allan_

Ex-cess, _gormodedd_, _gormod_; _anghymmedroldeb_

Ex-change, _newid_, _cyfnewid_: _newid_, _ffeirio_

Ex-cise, _cyllid_, _toll_: _cyllido_; _trethu_

Ex-cite, _cyffroi_, _cynhyrfu_, _annog_

Ex-claim, _gwaedd_, _bloedd_: _gwaeddi_, _bloeddio_

Ex-clude, _cau allan_; _llysu_; _gwahardd_

Ex-cuse, _esgus_: _esgusodi_; _maddeu_

Ex-empt, _rhydd_; _esgusodol_: _rhyddhau_; _esgusodi_

Ex-ert, _egnïo_, _ymdrechu_; _arfer_

Ex-hale, _tarthu_; _anadlu allan_; _anadlu_

Ex-hort, _annog_, _cynghori_; _rhybuddio_

Ex-haust, _dyhysbyddu_; _blino_

Ex-ile, _alldudiaeth_; _alldud_: _alldudio_, _deol_

Ex-ist, _bod_, _hanfod_; _byw_; _aros_

Ex-it, _ymadawiad_, _mynediad allan_; _terfyn_

Ex-pand, _lledu_, _taenu_; _agor_

Ex-panse, _eangder_; _ymlediad_

Ex-pect, _dysgwyl_; _aros_; _gobeithio_

Ex-pel, _bwrw allan_; _ymlid ymaith_

Ex-pend, _treulio_, _gwario_, _costio_

Ex-pense, _traul_, _cost_; _treuliad_

Ex-pert, _hyfedrydd_; _cyfarwydd_, _cywraint_

Ex-pire, _anadlu allan_; _trengu_, _marw_

Ex-plain, _egluro_, _amlygu_; _dangos_

Ex-plode, _ffrwydro_; _difrio_; _cablu_

Ex-ploit, _gorchest_, _camp_; _gwrolwaith_

Ex-plore, _fforio_; _chwilio_; _profi_

Ex-port, _allforiad_, _trawglud_

Ex-pose, _eglurhâd_: _dynoethi_; _dangos_

Ex-pound, _egluro_, _esbonio_; _dirnad_

Ex-press, _brysgenad_, _cenadwri_; _eglur_, _amlwg_: _mynegi_, _traethu_

Ex-tant, _yn bod_; _hanfodol_

Ex-tend, _estyn_; _hwyhau_; _helaethu_

Ex-tent, _helaethrwydd_; _hyd_; _estyn_

Ex-tinct, _diffoddedig_: _diffoddi_; _difa_

Ex-tol, _dyrchafu_, _mawrygu_

Ex-tort, _gwasgu_, _gorthrymu_; _mynu_

Ex-tra, _tra_, _rhy_, _tros ben_

Ex-tract, _erthynawd_; _crynodeb_; _tynu_; _gwasgu allan_; _crynhoi_

Ex-treme, _eithaf_; _pellder_; _diweddaf_; _dirfawr_

Ex-ult, _ymddychlamu_; _llawenhau_

Eye-ball, _canwyll llygad_, _mablygad_

Eye-brow, _ael_, _ael y llygad_

Eye-lash, _geilflew_, _amrantflew_

Eye-lid, _amrant_, _amrant llygaid_

Eye-sight, _golwg_; _llygaid_: _gweled_

Fa-ble, _chwedl_, _dychymmyg_: _ffugio_

Fab-ric, _adail_, _adeilad_: _adeiladu_

Fac-ile, _hawdd_, _rhwydd_; _hynaws_

Fac-ing, _gwynebiad_: _yn gwynebu_

Fac-tor, _gorchwylydd_, _rhagfaelydd_

Fag-ot, _ffagod_, _ffagoden_: _ffagodi_

Faint-ing, _llewygiad_; _llewyg_

Fair-ly, _yn deg_

Fair-y, _ellyll_, _gwyll_; _tylwyth teg_

Faith-ful, _ffyddlawn_; _diwair_; _cywir_

Fal-con, _hebog_, _gwalch_

Fall-en, _syrthiedig_, _cwympedig_

Fall-ing, _syrthiad_: _yn syrthio_

Fal-low, _braenar_: _braenaru_

False-hood, _geudeb_, _ffalsedd_, _anwiredd_

Fal-ter, _cecian_; _attal dywedyd_; _bloesgi_

Fam-ine, _newyn_; _diffyg ymborth_

Fam-ish, _newynu_; _marw o newyn_

Fa-mous, _enwog_, _clodfawr_, _canmoladwy_

Fan-cy, _dychymmyg_; _mympwy_; _hoffedd_: _dychymmygu_, _ffansio_; _serchu_

Fan-light, _awffenestr_, _ffenestr wyntyll_

Fare-well, _ymadawiad_; _bydd wych_; _ffarwel_

Farm-er, _amaethydd_, _ffarmwr_, _llafurwr_

Far-row, _perchyll_, _torllwyth_: _porchellu_

Far-ther, _pellach_; _ym mhellach_

Far-thest, _pellaf_, _eithaf_; _yn bellaf_

Far-thing, _ffyrling_, _flyrlling_

Fash-ion, _dull_, _gwedd_: _llunio_, _ffurfio_

Fast-en, _sicrhau_; _diogelu_; _cyssylltu_

Fast-ing, _ymprydiad_: _yn ymprydio_

Fast-ness, _sicrwydd_, _diogelwch_, _amddiffynfa_

Fa-tal, _angeuol_; _tyngedfenol_

Fa-ther, _tad_; _tadws_: _tadu_, _tadogi_

Fath-om, _gwrhyd_, _chwech trodfedd_: _gwrhydu_

Fa-tigue, _blinder_, _lludded_: _blino_, _lluddedu_

Fat-ling, _llwdn pesgedig_; _pasgedig_

Fat-ness, _brasder_, _tewder_; _ffrwythlondeb_

Fat-ten, _tewhau_, _tewychu_, _brasäu_

Fa-vour, _hoffedd_, _caredigrwydd_: _hoffi_, _parchu_, _cynnorthwyo_

Fear-ful, _ofnog_, _brawychus_; _ofnadwy_

Feast-ing, _gwleddiad_; _cyfeddach_, _gwledd_

Feath-er, _pluen_; _addurn_: _pluo_; _addurno_

Fea-ture, _prydwedd_, _pryd_: _prydweddu_

Fee-ble, _gwan_, _egwan_, _dinerth_

Feel-ing, _teimlad_; _syniad_; _teimladwy_

Fel-low, _cydymaith_, _cyfaill_: _cyfeillio_; _cyplu_

Fel-on, _cyflafanwr_, _drygweithredwr_; _creulawn_

Fe-male, _benyw_, _merch_; _benywaidd_

Fen-der, _rhagodydd_, _aelwydor_; _ffender_

Fen-ny, _corsol_, _corsog_, _corslyd_

Fer-ment, _ymwaith_; _heples_: _ymweithio_, _eplesu_

Fer-rel, _amdorch_: _amdorchi_

Fer-ry, _ceubalfa_, _porthfa_: _trosglwyddo_, _trosi_

Fer-tile, _ffrwythlawn_; _toreithiog_

Fer-vent, _gwresog_; _taer_; _eiddgar_

Fer-vid, _gwresog_, _poeth_; _brwdfrydig_

Fer-vour, _gwres_

Fes-ter, _crawni_, _madru_, _braenu_

Fes-tive, _gwleddol_

Fet-ter, _llyffethar_: _llyffetheirio_

Feu-dal, _gwriogaethol_; _cydweiniol_

Fe-ver, _twymyn_, _llucheden_: _twymyno_

Few-el, _tanwydd_: _tanboethi_, _porthi tân_

Fi-at, _gorchymmyn_, _arch_

Fi-bre, _llinionen_, _edef_; _meinwreiddyn_

Fi-brous, _llinaidd_, _meinwreiddiog_

Fic-tion, _ffugiant_, _ffugwaith_; _ffalsedd_

Fierce-ness, _ffrynigrwydd_; _digofaint_

Fight-ing, _ymladdiad_; _ymladdgar_

Fig-ure, _llun_, _dull_, _ffurf_, _delw_, _arwyddlun_: _llunio_, _ffarfio_; _rhwysgo_

Fil-ial, _mabaidd_, _mabol_; _plentynol_

Fil-let, _ysnoden_, _rhwymyn_: _ysnodenu_; _rhwymo_; _cylchu_

Fil-ly, _eboles_, _ffilog_

Fil-ter, _hidl_; _puredydd_: _hidlo_; _puro_

Filth-y, _budr_, _brwnt_, _ffiaidd_, _aflan_

Fi-nal, _diweddaf_, _penderfynol_; _llwyr_

Fi-nance, _daered_, _cyllid y deyrnas_; _trethyddiaith_

Fine-ness, _tegwch_; _meinder_; _cywreinrwydd_

Fin-ish, _gorphen_, _terfyn_: _dybenu_, _diweddu_

Fin-ger, _bys_: _bysio_, _teimlo_

Fin-ny, _adeiniog_, _asgellog_, _pysgadeiniog_

Fi-nite, _terfynol_, _meidrol_; _mesurol_

Fire-arms, _arfau tân_; _cyflegrau_, _gynau_

Fire-damp, _tanchwa_, _tanfa_

Fire-side, _aelwyd_; _pentan_; _teulu_

Firm-ness, _cadernid_, _ffyrfder_, _sefydlogrwydd_

First-born, _cyntafanedig_, _hynaf_

First-fruit, _blaenffrwyth_, _cynffrwyth_

Fish-er, _pysgotwr_

Fish-ing, _pysgota_

Fish-pond, _pysgodlyn_

Fis-sure, _hollt_, _agen_: _hollti_, _agenu_

Fit-ter, _addaswr_, _cyfaddasydd_, _ffitiwr_

Fix-ture, _sefydliad_; _sadrwydd_

Fix-tures, _anysgogion_, _dodrefn arosol_

Flab-by, _llibin_; _masw_, _meddal_

Flac-cid, _llipa_, _gwywllyd_, _nychlyd_

Fla-grant, _llosg_, _poeth_, _gwresog_

Flan-nel, _gwlanen_

Flat-ter, _gwastadydd_: _gwenieithio_

Fla-vour, _archwaeth_: _archwaethu_

Flesh-ly, _cnawdol_: _bydol_; _anianol_

Flesh-meat, _cigfwyd_, _cig_

Float-ing, _nofiad_: _nofiedig_, _yn nofio_

Flog-ging, _ffrwylliad_

Flood-gate, _llifddor_, _dyfrddor_, _argae_

Flor-id, _blodeuog_; _claerwych_; _gwridog_

Flor-ist, _blodeuwr_, _blodameuthydd_

Floun-der, _llythïen_, _lleden_: _ystreigled_; _ymsoddi_

Flour-ish, _blodau_; _addurn_: _blodeuo_; _llwyddo_

Flow-er, _blodeuyn_; _addurnwaith_: _blodeuo_

Flow-ing, _llifiad_, _ffrydiad_; _llifol_, _ffrydiol_

Flu-ent, _ffrwd_; _darlifran_; _ffrydiol_; _hyawdl_

Flu-id, _aw_, _gwy_, _gwlybwr_; _hylifol_, _rhedegog_

Flut-ter, _ysgydwad_: _ymhedfan_

Fly-ing, _ehediad_; _ffoad_

Foam-ing, _ewynawg_

Fo-cus, _cynnullfan pelydr_; _ffoc_

Fod-der, _porthiant_: _porthi_

Fog-gy, _niwliog_; _godywyll_

Fold-ing, _plygiad_

Fol-low, _dilyn_, _canlyn_; _erlid_

Fol-ly, _ynfydrwydd_, _ffoledd_

Fo-ment, _cynhesu_; _twymeneinio_

Fon-dle, _gorhoffi_, _llochi_

Fool-ish, _ffol_, _annoeth_

Foot-ing, _cerddediad_; _sefyllfa_, _safle_

Foot-path, _llwybr troed_

Foot-step, _ôl troed_, _cam_; _llwybr_

Foot-stool, _troedfaingc_, _lleithig_

For-age, _gogawr_, _ebran_: _casglu porthiant_

For-bear, _ymattal_; _goddef_

For-bid, _gwahardd_, _gomedd_

Fore-hand, _ym mlaen llaw_

Fore-head, _tal_, _talcen_

For-eign, _estronol_, _tramor_

Fore-man, _blaenor_; _hyfforddwr_

Fore-most, _blaenaf_; _ym mlaenaf_

Fore-see, _rhagweled_; _rhagwybod_

Fore-sight, _rhagolwg_, _rhagwelediad_

For-est, _coedwig_: _fforestu_

Fore-tell, _rhagfynegi_, _darogan_

Fore-ward, _y wyneb_, _y tu wyneb_

Fore-warn, _rhagrybuddio_

For-feit, _camlwrw_, _dirwy_: _fforffedu_

For-ger, _ffugluniwr_, _ffugiwr_

For-get, _ebargofi_, _anghofio_

For-give, _maddeu_, _rhyddhau_

For-lorn, _diymgeledd_, _amddifad_; _gwrthodedig_

Form-al, _ffurfiol_; _rheolaidd_

Form-er, _ffurfiwr_; _cynt_, _blaenorol_

For-sake, _gadael_, _ymadael â_

Fort-night, _pythefnos_

For-tress, _amddiffynfa_, _caer_

For-tune, _tesni_; _ffyniant_; _damwain_; _gwaddol_, _cynnysgaeth_

For-ward, _eon_; _awyddus_; _hyrwyddo_

For-wards, _ym mlaen_, _rhag blaen_

Fos-sil, _mwm_, _mettel_

Fos-ter, _magu_, _maethu_

Found-er, _seiliwr_: _suddo_

Foun-tain, _ffynnon_, _ffynnonell_

Four-fold, _pedwarplyg_

Fowl-er, _adarwr_

Frac-tion, _toriad_, _rhwygiad_; _twnrif_

Frac-ture, _toriad_: _tori_, _dryllio_

Fragile, _brau_, _breuol_

Frag-ment, _dryll_, _darn_, _briwys_

Fra-grance, _perarogledd_

Fra-grant, _peraroglus_

Fran-chise, _braint_, _rhyddfraint_

Frank-ly, _yn rhwydd_, _o fodd_

Fran-tic, _gwallgofus_, _ynfyd_

Free-dom, _rhyddid_; _dinasfraint_

Free-hold, _rhydd-ddaliad_, _rhyddfeddiant_

Free-ly, _yn rhydd_, _yn rhodd_; _yn hael_

Fren-zy, _gorphwyll_, _cynddaredd_

Fre-quent, _mynych_, _aml_

Fret-ful, _anfoddog_, _digofus_

Fri-ar, _mynach_

Fric-tion, _rhathiad_, _rhwbiad_

Fri-day, _dydd Gwener_

Friend-ly, _cyfeillgar_, _caredig_

Friend-ship, _cyfeillach_; _caredigrwydd_

Fri-gate, _ysgafn-long_

Fright-ful, _dychrynllyd_

Fri-gid, _oer_, _oerllyd_; _marwaidd_

Frol-ic, _cellweirgamp_; _gorhoenus_

Frost-y, _rhewlyd_, _rhewllyd_

Fro-ward, _anynad_, _anhywaith_

Frown-ing, _cuchiog_, _cilygus_

Fro-zen, _rhewedig_; _ceuledig_

Fru-gal, _cynnil_, _ymarbedus_

Fruit-ful, _ffrwythlawn_, _cnydfawr_

Frus-trate, _seithug_, _ofer_: _seithugo_; _somi_

Fu-el, _tanwydd_, _cynnud_

Ful-crum, _gwifrwym_, _colpwys_

Ful-fil, _cyflawni_, _gorphen_

Ful-ler, _panwr_, _golchydd_

Ful-ness, _llawndid_, _cyflawnder_

Func-tion, _swydd_, _galwedigaeth_

Fun-nel, _twmffed_; _ffynel_

Fur-long, _ystaden_

Fur-lough, _abseneb_, _ysgrifen drwydded milwr_, _ffyrlo_: _absenebu_

Fur-nace, _ffwrn_; _creisier_, _ffyrnais_

Fur-nish, _dodrefnu_; _cynnysgaeddu_, _darparu_

Fur-row, _cwys_, _rhych_: _cwyso_, _rhychu_

Fur-ther, _ym mhellach_, _eto_, _hefyd_; _pellach_, _eithaf_: _rhwyddhau_

Fu-ry, _cynddaredd_, _ffyrnigrwydd_

Fu-sion, _toddiad_, _dadleithiad_

Fu-ture, _rhag llaw_; _i ddyfod_

Gai-ly, _yn hoyw-wych_; _yn llawen_

Gal-lant, _cariad-ddyn_; _gwrol_, _dewrwych_

Gal-lon, _galwyn_

Gal-lop, _carlam_: _carlamu_

Gal-lows, _crogbren_

Gam-ble, _chwiredu_

Gam-bol, _chwydawiaeth_: _crychlamu_

Game-ster, _chwarëydd_

Gan-der, _ceiliogwydd_

Gan-grene, _madredd_, _braenedd_

Gar-den, _gardd_: _garddu_

Gar-land, _coronbleth_; _talaith_

Gar-ment, _dilledyn_, _gwisg_

Gar-ner, _ysgubor_: _ysguborio_

Gar-nish, _addurniad_: _addurno_

Gar-ret, _nenawr_, _uchystafell_

Gar-ter, _gardys_

Gate-house, _cynhordy_, _porthdy_

Gath-er, _casglu_, _cynnull_

Gath-ers, _plygiadau_

Gaug-ing, _mesuriad llestri_

Ga-zette, _newyddiadur_, _llysnewyddor_

Gaz-ing, _hylldremiol_: _yn syllu_

Gen-der, _rhyw_: _cenedlu_, _eppilio_

Gen-teel, _moesawg_, _gweddaidd-dlws_

Gen-tile, _cenedlddyn_; _cenedlig_

Gen-tle, _boneddig_; _tirion_

Gen-try, _boneddigion_

Get-ting, _caffaelaid_; _ennill_

Gi-ant, _cawr_

Gib-bet, _crogbren_: _crogi_

Gib-bous, _crothog_, _crymaidd_

Gib-lets, _syrth gŵydd_

Gid-dy, _syfrdan_; _anwadal_

Gift-ed, _rhoddedig_; _doniol_

Gild-ing, _goreurad_, _euriad_

Gim-let, _ebillen_, _trwyddew_

Gir-dle, _gwregys_, _rhwymyn_

Glad-den, _lloni_, _llawenhau_

Glar-ing, _llachar_, _eglur_: _yn serenu_

Gleam-ing, _godywynawl_, _llachar_

Glean-ing, _lloffiad_: _lloffa_

Glim-mer, _godywynu_, _gwanlewyrchu_

Glit-ter, _gorddysgleirdeb_: _gorddysgleirio_

Glo-bule, _crynyn_; _defnyn_

Gloom-y, _caddugol_, _cymmylog_; _gobrudd_

Glo-ry, _gogoniant_: _ymogoneddu_

Glow-worm, _y gyfarwydd_, _gloen_

Glut-ton, _glwth_, _rhemmwth_

Gnash-ing, _rhinciad_, _ymgnoad_

Gnaw-ing, _cnoad_, _cnofa_: _cnoi_

God-ly, _duwiol_, _dwyfol_

Go-ing, _mynediad_; _ymadawiad_

Gold-en, _euraid_, _euraidd_

Gold-smith, _eurych_, _gof aur_

Good-ness, _daioni_, _tosturi_

Good-will, _ewyllys da_, _bodd_

Go-ry, _gorllyd_, _gwaedlyd_

Gor-geous, _hoyw-wych_, _claerwych_

Gos-ling, _gwyddan_, _cyw gwydd_

Gos-pel, _efengyl_, _newydd da_

Gov-ern, _llywodraethu_, _rheoli_

Grace-ful, _prydferth_, _teg_

Gra-cious, _rhadlawn_, _trugarog_

Gram-mar, _gramadeg_, _ieithadur_

Gran-deur, _mawrwychder_; _rhwysg_

Gran-ite, _gwenithfaen_

Grap-ple, _gafaelfach_: _bachu_

Grate-ful, _diolchgar_, _derbyniol_

Grat-ing, _alchwaith_; _garw_, _llym_

Gra-tis, _yn rhad_, _yn rhodd_

Grav-el, _marian_, _gro_: _graeanu_

Grav-en, _cerfiedig_

Grav-er, _cerfiwr_; _crifell_

Gra-vy, _sudd cig_

Great-er, _mwy_; _penach_

Great-ness, _mawredd_; _maintioli_

Greed-y, _chwanog_, _awchus_

Greet-ing, _anerch_, _cyfarch_

Griev-ance, _gofid_, _gormes_

Griev-ous, _trwm_, _gorthrwm_, _poenus_

Grind-er, _malwr_; _cilddant_

Grind-ing, _maliad_, _maluriad_

Gris-tle, _madruddyn_, _mwythan_

Groan-ing, _ucheneidiad_

Grot-to, _ogofdy_, _addurngell_

Grow-ing, _cynnyddol_: _yn tyfu_

Grum-ble, _grwgnach_, _tuchan_

Guard-ed, _gwarchodedig_

Guid-ance, _arweiniad_, _tywysiad_

Guild-hall, _bwrdeisdy_, _dadleudy_

Guilt-y, _euog_, _beius_

Gut-ter, _ffos_, _dyfrglawdd_: _ffosi_, _cwteru_

Hab-it, _cyflwr_, _tuedd_, _arfer_, _defod_; _gwisg_: _gwisgo_, _trwsiadu_

Hail-stone, _ceseiryn_, _careg genllysg_

Hal-low, _cyssegru_

Halt-er, _cebystr_, _tenyn_: _cebystru_

Ham-let, _maesdref_, _pentref_

Ham-mer, _morthwyl_; _morthwylio_

Ham-mock, _crogwely_

Hamp-er, _cawell_: _dyrysu_, _maglu_

Hand-ful, _dyrnaid_; _crafangiad_

Han-dle, _carn_; _coes_: _llofi_, _teimlo_, _trin_

Hand-some, _hardd_, _glân_, _prydferth_

Hand-y, _hylaw_; _parod_

Hap-ly, _ysgatfydd_, _o ddamwain_

Hap-pen, _damweinio_, _dygywddo_

Hap-py, _dedwydd_, _gwynfydedig_

Ha-rangue, _araeth_: _areithio_

Har-ass, _aflonyddu_, _blino_

Har-bour, _porthladd_: _llettya_; _noddi_

Hard-en, _caledu_; _ymgaledu_

Hard-y, _caled_, _cadarn_; _calonog_

Hard-ship, _caledi_, _gorthrymder_

Hard-ness, _caledwch_

Hard-ware, _durgelfi_

Har-lot, _putain_, _dyhiren_

Harm-less, _diddrwg_

Har-ness, _harneis_, _trec_: _harneisio_, _cerio_

Harp-er, _telynor_, _telynwr_

Har-poon, _tryfer morfeirch_

Har-row, _og_, _oged_: _llyfnu_, _ogi_

Harsh-ness, _gerwindeb_, _anfwynder_

Har-vest, _cynauaf_: _cynauafu_

Hast-y, _brysiol_; _byrbwyll_

Hatch-et, _bwyell_, _cymmynai_

Hate-ful, _cas_, _atgas_, _ffiaidd_

Hat-ter, _hetwr_, _hetiwr_

Haught-y, _trahäus_, _ffroenuchel_

Ha-ven, _porthladd_, _llongborth_

Hav-ing, _meddiant_; _yn meddu_

Hav-oc, _difrod_: _difrodi_

Hawk-er, _hebogydd_; _gwicwr_

Haw-thorn, _ysbyddad_; _draenen wen_

Hay-rick, _das wair_

Haz-ard, _enbydrwydd_; _antur_: _anturio_; _peryglu_

Ha-zel, _collen_, pl. _cyll_; _gwineu goleu_

Head-ache, _cur pen_

Head-long, _yn bendramwngl_; _serth_; _chwyrnwyllt_

Health-y, _iach_

Hear-ing, _clyw_, _clywedigaeth_; _gosteg_; _gwrandawiad_

Heark-en, _gwrandaw_

Heart-y, _calonog_; _iachus_; _diffuant_

Hea-then, _cenedlddyn_, _ethnig_

Heav-en, _nef_, pl. _nefoedd_

Heav-y, _trwm_, _pwysfawr_; _trist_

Hedge-row, _gwydding_, _gwyddi_

Hedge-hog, _draenog_, _ballog_

Heed-less, _anochelgar_, _esgeulus_

Heif-er, _anner_

Height-en, _uchelu_; _mwyhau_

Hei-nous, _echryslawn_, _ysgeler_

Heir-ess, _etifeddes_

Hel-met, _penwisg dur_, _penffestin_

Help-less, _digymhorth_, _dinodded_

Hence-forth, _bellach_, _rhag llaw_

Her-ald, _achwydd_; _cyhoeddwr_

Herb-age, _porfa_, _tir porfa_; _llysiau_

Herds-man, _bugail_, _deadellwr_

Here-by, _wrth hyn_

Here-in, _yn hyn_; _yma_; _i hyn_

Here-of, _o hyn_

Here-on, _ar hyn_

Here-to, _i hyn_, _at hyn_, _wrth hyn_; _hyd yn hyn_

Here-with, _efo hyn_, _gyda hyn_

Her-mit, _meudwy_, _didryfwr_

He-ro, _arwr_, _gwron_

Her-ring, _penwag_, _ysgadenyn_

Her-self, _hi ei hunan_, _ei hunan_

Hic-cough, _ig_, _yr ig_: _igian_

High-land, _ban_, _ucheldir_

High-ly, _yn fawr_, _yn falch_, _yn uchel_

High-ness, _uchder_; _uchelradd_

High-way, _ffordd fawr_, _prif-ffordd_

Hill-ock, _bryncyn_, _twmpath_

Him-self, _ei hun_, _ei hunan_

Hind-er, _rhwystro_, _attal_

Hire-ling, _gwas cyflog_; _diffeithyn_

Hith-er, _yma_, _hyd yma_

Hoar-frost, _llwydrew_, _barug_

Hoarse-ness, _crygni_, _crygi_

Hold-fast, _gafaelfach_; _dalbren_

Hol-low, _ceule_; _cafnog_: _cafnu_

Hol-ly, _celynen_

Ho-ly, _santaidd_, _glân_

Hom-age, _gwriogaeth_, _ymostyngiad_

Home-ly, _gwladaidd_; _trwsgl_

Home-ward, _adref_, _tuag adref_

Hon-est, _cyfiawn_, _cywir_, _didwyll_, _gonest_

Hon-ey, _mel_; _anwylyd_, _anwylddyn_

Hon-our, _anrhydedd_: _anrhydeddu_

Horn-y, _cornaidd_, _cyrnaidd_

Hor-rid, _erchyll_, _anferth_

Hor-ror, _arswyd_, _dychryn_

Horse-hair, _rhawn_

Hos-ier, _hosanydd_

Host-age, _mach_, _gwystl_

Hos-tile, _gelyniaethus_; _rhyfelgar_

Host-ler, _marchwas_, _ostler_

Hot-house, _twymndy_, _ty brwd_

Hov-el, _penty_, _bwth_

Hour-ly, _bob awr_; _oriawl_

House-hold, _teulu_, _tylwyth_

House-less, _diannedd_, _diartref_

Hous-ing, _hws_, _huling march_

Howl-ing, _udawl_, _udgar_

Hu-man, _dynol_, _dyniadol_

Hu-mane, _hynaws_, _dyngarol_

Hum-ble, _difalch_, _gostyngedig_: _iselu_, _darostwng_

Hu-mid, _gwlyb_, _llaith_

Hu-mour, _irnaws_, _gorlif_; _tymher_: _boddhau_, _mwyndrin_

Hun-dred, _cantref_; _cant_

Hun-ger, _newyn_: _newynu_

Hun-gry, _newynog_; _gwangcus_

Hunt-ing, _helwriaeth_; _helfa_

Hur-dle, _clwyd_, _pleiden_

Hur-ry, _ffrwst_, _brys_: _prysuro_

Hurt-ful, _niweidiol_, _anafawl_

Hus-band, _gwr_; _priod_: _iawndrefnu_

Hy-phen, _cyssylltnod_ (-)

I-cy, _iâin_, _rhewlyd_

I-dle, _segur_; _dioglyd_: _segura_; _diogi_

I-dol, _delw_, _eilun_

Ig-nite, _ennyn_, _tanio_

Ill-ness, _afiechyd_, _clefyd_

Il-lude, _twyllo_; _cellwair_

Im-age, _delw_, _eilun_: _llunio_; _tybied_

Im-bibe, _sugno_, _derbyn_, _llyngcu_

Im-brue, _trochi_, _mwydo_

Im-mense, _anfeidrol_, _tramawr_

Im-merge, Im-merse, _suddo_, _trochi_

Im-pair, _lleihau_; _gwaethygu_

Im-part, _cyfranu_, _rhoddi_

Im-peach, _cyhuddo_, _achwyn ar_

Im-pede, _attal_, _rhwystro_

Im-pel, _cymhell_, _annog_, _gyru_

Im-pend, _ymhongian_; _dynesu_

Im-plore, _attolygu_, _erfyn_

Im-ply, _cynnwys_; _arwyddo_

Im-pose, _gosod ar_, _trethu_; _twyllo_

Im-post, _toll_, _treth_, _cyllid_

Im-press, _argraff_: _argraffu_, _nodi_

Im-prove, _gwelläu_, _diwygio_

Im-pugn, _gwrthwynebu_, _ymosod ar_

Im-pulse, _gwthiad_, _cynhyrfiad_

Im-pure, _ammhur_, _aflan_

Im-pute, _cyfrif_; _priodoli_

In-cense, _arogldarth_: _enyn llid_, _digio_

In-cest, _llosgach_

In-cite, _annog_, _cyffroi_

In-cline, _tueddu_, _gogwyddo_

In-clude, _cau i fewn_, _cynnwys_

In-come, _ardreth_, _cyllid_

In-crease, _cynnydd_: _tyfu_, _cynnyddu_

In-cur, _rhedeg i_; _haeddu_

In-deed, _yn wir_, _yn sicr_

In-dent, _bwlch_: _minfylchu_, _bylchu_

In-dex, _dangoseg_, _mynegfys_

In-dict, _achwyn ar_, _cyhuddo_

In-dite, _cyfansoddi_; _cyhuddo_

In-duce, _tueddu_, _darbwyllo_

In-dulge, _boddhau_, _anwesu_; _caniatau_

In-dure, _parhau_; _dioddef_

In-fant, _maban_, _baban_

In-fect, _llynu_, _adwytho_; _llygru_

In-fer, _casglu_, _tynu casgliad_

In-fest, _dygnflino_, _aflonyddu_

In-firm, _egwan_: _gwanhau_

In-flame, _ennyn_, _fflamio_

In-flate, _ymchwyddo_

In-flect, _plygu i fewn_, _troi_

In-flict, _rhoddi cosb_, _cosbi_

In-flux, _dylifiad_, _ymlanwad_

In-fold, _dyblygu_; _amwisgo_

In-form, _hysbysu_, _cyfarwyddo_

In-fract, _tori_, _dryllio_

In-fringe, _tori cytundeb_, _troseddu_

In-fuse, _tywallt i mewn_; _mwydo_

In-got, _clamp_

In-hale, _atanadlu_, _iddanadlu_

In-ject, _taflu i fewn_, _chwistrellu_

In-join, _gorchymmyn_, _erchi_

In-jure, _niweidio_, _colledu_

In-land, _canoldir_; _canoldirog_

In-let, _ffrydle_, _adwy_

In-mate, _llettywr_, _cytty_

In-most, _nesaf i fewn_, _dyfnaf_

In-ner, _tufewnol_

In-quest, _chwiliad_, _rhaithholiad_

In-quire, _ymofyn_, _holi_

In-road, _ymgyrch_, _rhuthrgyrch_

In-sane, _gwallgofus_

In-scribe, _arysgrifenu_; _cyflwyno_

In-sect, _trychbryfyn_, _trychfilyn_

In-sert, _dodi i fewn_

In-side, _y tu fewn_; _mewnol_

In-sight, _dwfn-olygiad_; _cyfarwyddyd_

In-sist, _sefyll ar_; _honi_; _dirgymhell_

In-spect, _edrych i fewn_, _golygu_

In-spire, _anadlu i_; _ysbrydoli_

In-stall, _urddo_, _graddio_; _gorseddu_

In-stance, _enghraifft_, _cynllun_: _enghraifftio_

In-stant, _cythrym_, _amrantiad_; _ebrwydd_

In-stead, _yn lle_, _tros_; _cystal a_

In-step, _mwnwgl troed_

In-stil, _defnynu i fewn_; _egwyddori_

In-stinct, _greddf_; _bywiog_

In-struct, _addysgu_, _cyfarwyddo_

In-sult, _sarhâd_: _dirmygu_

In-sure, _diogelu_, _digolledu_

In-tend, _meddwl_, _bwriadu_

In-tense, _angerddol_, _tanbaid_

In-tent, _bwriad_, _amcan_; _llwyrfrydig_

In-ter, _claddu_, _daiaru_

In-to, _i_, _i fewn i_

In-trigue, _cuddneges_: _cuddnegeseua_

In-trude, _ymwthio i fewn_; _ymyryd_

In-trust, _ymddiried_

In-vade, _rhuthro i_, _rhuthro_

In-veigh, _difrio_, _cablu_

In-vent, _dyfeisio_, _dychymmygu_

In-verse, _gwrthdroëdig_

In-vert, _gwrthdroi_; _trawsddodi_

In-vest, _gwisgo_, _urddo_; _gosod mewn meddiant_

In-vite, _gwahodd_, _galw_

In-voice, _llwythrestr_

In-voke, _galw ar_, _ymbil_

In-volve, _dyrysu_; _cymmysgu_

In-ure, _cynnefino_, _arferu_

In-ward, _mewnol_; _o'r tu fewn_

In-wards, _coludd_, _perfedd_

Ire-land, _Iwerddon_

I-ris, _yr enfys_, _bwa y gwlaw_

I-ron, _haiarn_: _haiarnu_

Is-land, _ynys_

Is-sue, _mynediad allan_; _canlyniad_; _hiliogaeth_: _tori_, _codi_; _cyhoeddi_

Isth-mus, _cyfyngdir_, _lleindir_

Itch-ing, _cos_, _cosfa_, _ysfa_

I-tem, _amnaid_; _pen_; _pwngc_; _hefyd_: _cofnodi_

It-self, _ei hun_, _ei hunan_

Jail-er, _ceidwad carchar_

Ja-pan, _arliwio_, _barneisio_

Jaun-dice, _y melyni_, _y cryd melyn_

Jave-lin, _picell_, _gwaewffon_

Jeal-ous, _eiddigeddus_; _amhëus_

Jel-ly, _gludgawl_, _sew_

Jeop-ard, _peryglu_, _enbydu_

Jew-el, _gem_, _em_, _glain_, _tlws_

Jew-ess, _Iuddewes_

Jock-ey, _marchogwr_: _hergwthio_

Join-er, _cyssylltwr_, _asiedydd_

Jour-nal, _coflyfr_; _rhestrydd_

Jour-ney, _taith_: _teithio_

Joy-ful, _llawen_, _gorfoleddus_

Judg-ment, _barn_, _barnedigaeth_

Ju-ly, _Gorphenaf_

Junc-tion, _cydiad_; _undeb_

Junc-ture, _cydiad_; _cysswllt_

Ju-ry, _rheithwyr_

Jus-tice, _cyfiawnder_, _barn_; _ynad_, _ustus_

Keen-ness, _craffder_; _gorawydd_

Keep-er, _ceidwad_, _gwarcheidwad_

Keep-ing, _cadwraeth_

Ken-nel, _ty cŵn_; _ffos budreddi_

Ker-nel, _cnewyllyn_, _bywyn_

Ket-tle, _callawr_, _crochenyn_, _tegell_

Key-hole, _twll y clo_

Kid-ney, _aren_, _elwlen_

Kin-dle, _ennyn_, _cynneu_

Kind-ly, _yn garuaidd_; _yn rhywiog_

Kind-ness, _cymmwynas_, _rhadlonedd_

Kin-dred, _cystlynedd_, _perthynas_; _cydrywiol_; _perthynol_

King-dom, _teyrnas_, _breninaeth_

Kins-man, _câr_, _cyfnesaf_

Kitch-en, _cegin_

Kit-ten, _mabcath_, _cath fechan_

Know-ing, _gwybodus_, _deallus_

Know-ledge, _gwybodaeth_, _dealltwriaeth_

Knuck-le, _migwrn_: _migyrnu_

La-bel, _llabed_, _crogiedydd_

La-bour, _llafur_, _trafael_: _llafurio_, _gweithio_

Lad-der, _ysgol_, _llettring_

Lad-en, _llwythedig_

Lad-ing, _llwyth_; _baich_, _pwn_

La-dle, _lledwad_; _llwy_

La-dy, _arglwyddes_, _pendefiges_

Lamb-kin, _oenan_, _oenyn_, _oenig_

La-ment, _galaru_, _cwynfan_

Lan-cet, _fflaim_

Land-ed, _tiriog_; _wedi tirio_

Land-lord, _meistr tir_; _tafarnwr_

Land-mark, _ffin_, _cyffin_, _terfyn_

Land-scape, _tirolwg_; _arbeiaeth_

Lan-guage, _iaith_: _ymadrodd_

Lan-guid, _llesg_, _methedig_, _egwan_

Lan-guish, _nychu_, _methu_, _dihoeni_

Lan-tern, _erllen_, _llusern_

Lap-wing, _cornchwigl_

Large-ness, _mawredd_, _helaethder_

Last-ing, _parhäus_, _cryf_

Latch-et, _carai esgid_

Late-ly, _yn ddiweddar_

La-tent, _dirgel_, _cuddiedig_

Lath-er, _sebondrwyth_

Lat-ter, _diweddarach_, _hwyrach_

Lat-tice, _dellt_: _delltu_

Laugh-ing, _chwerthiniad_

Laugh-ter, _chwerthin_, _chwardd_

Laun-der, _dyfrgafn_

Laun-dry, _golchdy_, _golchfa_

Lau-rel, _llawrwydd_, _llawryf_

Law-ful, _cyfreithlawn_

Law-suit, _cwyn cyfraith_

Law-yer, _cyfreithiwr_

Lay-er, _haen_, _gwanaf_; _gwely_

Lay-man, _lleygwr_

La-zy, _diog_, _swrth_

Lead-er, _arweinydd_; _blaenor_

Leap-year, _blwyddyn naid_

Learn-ing, _dysg_, _ysgoleigdod_

Leath-er, _lledr_; _croen_

Leav-en, _surdoes_: _surdoesi_

Lec-ture, _llith_, _darlith_: _darlithio_

Led-ger, _cyfriflyfr_, _gorsaflyfr_

Le-gal, _deddfol_, _cyfreithlawn_

Leg-ate, _cenadwr_

Le-gend, _llithlyfr_; _ffugchwedl_

Le-gion, _lleng_, _llu_

Lei-sure, _odfa_, _ennyd_, _hamdden_

Length-en, _estyn_, _hwyhau_

Lep-er, _gwahanglaf_

Lep-rous, _gwahanglwyfus_

Les-see, _dalysgrifiad_

Les-son, _gwers_: _gwersu_, _dysgu_

Let-ter, _llythyren_; _llythyr_: _llythyru_

Lev-el, _gwastadedd_; _gwastad_: _gwastadhau_; _annelu_

Le-ver, _trosol_, _gwif_

Le-vite, _Lefiad_

Lev-y, _cyllid_, _teyrnged_, _treth_

Lewd-ness, _anlladrwydd_

Li-ar, _celwyddwr_

Li-bel, _cabldraith_: _enllibio_

Li-cence, _trwydded_, _rhyddid_

Li-cense, _cenadu_, _trwyddedu_

Life-less, _difywyd_; _marwaidd_

Life-time, _hoedl_; _einioes_

Light-en, _llewyrchu_; _ysgafnhau_

Light-ning, _mellten_, _llucheden_

Like-ly, _tebygol_; _cyffelyb_

Like-ness, _tebygolrwydd_; _llun_

Like-wise, _felly_, _hefyd_

Lim-ber, _llipa_, _ystwyth_

Lim-it, _terfyn_, _ffin_: _terfynu_

Lim-ner, _eiluniwr_, _delweddwr_

Lim-pid, _tryloyw_, _dysglaer_

Lin-en, _llian_, _lliain_

Lin-guist, _ieithydd_

Lin-ing, _gwrthlain_

Lin-net, _llinos_, _llinosen_

Lin-tel, _gwarddrws_, _capan drws_

Li-on, _llew_

Liq-uid, _gwlyb_, _gwlybwr_

Liq-uor, _gwlybwr_, _diod_

Lisp-ing, _bloesgedd_, _bloesgni_

Lis-ten, _gwrando_, _clustfeinio_

Lit-ter, _cludai_; _torllwyth_: _gwasarnu_

Lit-tle, _bach_, _bychan_; _ychydig_

Live-ly, _bywiog_; _heinif_

Liv-er, _yr iau_, _yr afu_; _bucheddwr_

Liv-ing, _bywioliaeth_; _personiaeth_; _byw_; _yn fyw_

Liz-ard, _geneugoeg_, _gwedresi _

Load-stone, _ehedfaen_, _tynfaen_

Loath-some, _ffiaidd_, _atgas_

Lob-by, _cyntedd_, _cynteddfa_

Lob-ster, _ceimwch_, _llegest_

Lo-cal, _lleol_; _sefydlog_

Lo-cate, _llehau_; _sefydlu_

Lock-et, _addurnglo_

Lodge-ment, _lluest_; _sefydliad_; _sefyllfa_

Lof-ty, _uchel_, _dyrchafedig_

Log-ic, _rhesymeg_

Loi-ter, _gohirio_, _llercio_

Long-ing, _hiraeth_, _blys_; _hiraethol_

Loose-ness, _y dolur rhydd_; _dirywiaeth_

Lord-ship, _arglwyddiaeth_

Lo-tion, _golchdrwyth_

Loud-ness, _uchder_, _crochder_, _trwst_

Love-ly, _cariadusol_, _hawddgar_

Lov-ing, _cariadus_, _caredig_

Low-er, _duwch_, _prudd-der_: _gollwng_; _iselu_

Low-ing, _brefiad_, _rhuad_

Low-ness, _iselni_, _iselder_, _gwaeledd_

Loy-al, _ffyddlawn_, _cywir_

Lu-cid, _claer_, _dysglaer_, _goleu_

Luck-y, _llwyddiannus_, _ffodiog_

Lu-cre, _elw_, _ennill_, _budd_

Lug-gage, _cludlwyth_

Luke-warm, _claiar_, _llugoer_

Lum-ber, _hen ddodrefn_; _diddefnydd_

Lu-nar, _lloerawl_, _lleuadol_

Lus-cious, _tra melys_, _gorfelys_

Lust-ful, _cnawdwyllt_, _anllad_

Lus-tre, _gloywder_, _dysgleirder_

Lus-ty, _gwrol_, _cryf_, _grymus_; _corphol_; _iach_

Ly-ing, _celwyddiad_; _gorweddiad_; _celwyddus_: _yn gorwedd_

Ma-chine, _peiriant_; _offeryn_

Mad-am, _meistres_, _arglwyddes_

Mad-der, _y wreiddrydd_

Mad-ness, _gorphwyll_, _cynddaredd_

Mag-got, _cynrhonyn_

Mag-ic, _dewiniaeth_; _swynawl_

Mag-net, _ehedfaen_, _tynfaen tryfaen_

Mag-pie, _pi_, _piogen_

Maid-en, _gwyryf_; _gwyryfol_

Main-ly, _yn benaf_, _yn alluog_

Main-tain, _dal_, _cynnal_, _amddiffyn_; _porthi_

Ma-jor, _uchgadben_; _mwyaf_

Mak-er, _creawdwr_; _gwneuthurwr_

Mak-ing, _gwneuthuriad_

Mal-ice, _cenfigen_; _llid_

Ma-lign, _niweidiol_: _niweidio_

Mal-let, _gordd bren_, _gordd_

Malt-kiln, _odyn frag_

Mal-treat, _cam drin_

Malt-ster, _bragydd_, _bragwr_

Mam-mon, _Mammon_; _cyfoeth_

Man-age, _rheoli_, _trefnu_; _llywodraethu_

Man-date, _arch_, _gorchymmyn_

Man-ger, _preseb_, _cafn ebran_

Man-gle, _cigyddio_; _llyfnhau_

Man-hood, _oedran gwr_, _dyndeb_

Man-kind, _dynolryw_

Man-ly, _glew_, _gwrol_; _dynol_

Man-na, _bara nefol_, _manna_

Man-ner, _modd_, _dull_, _agwedd_

Man-ners, _moesau_; _ymarweddiad_

Man-or, _arglwyddiaeth_, _maenan_

Man-sion, _trigfa_, _cartref_

Man-tle, _mantell_, _cochl_

Ma-nure, _tail_, _gwrtaeth_: _gwrteithio_

Man-y, _llawer_, _aml_, _lluosog_

Mar-ble, _mynor_, _marmor_; _marmoraidd_: _mynori_, _mynorliwio_

Mar-gin, _ymyl_, _cwr_, _goror_

Ma-rine, _morfilwr_; _morawl_

Mar-ket, _marchnad_: _marchnata_

Mar-quis, _ardalydd_, _ardalwr_

Mar-riage, _priodas_; _neithior_

Mar-row, _mer_, _madrudd_

Mar-ry, _priodi_, _ymbriodi_

Mar-shal, _cadlywydd_: _iawndrefnu_

Mar-tial, _milwraidd_, _rhyfelgar_

Mar-tyr, _merthyr_: _merthyru_

Mar-vel, _rhyfeddod_, _syndod_: _rhyfeddu_, _synu_

Ma-son, _saer maen_, _saer ceryg_

Mas-sive, _trwm_, _pwysfawr_, _mawr_

Mas-ter, _meistr_: _meistroli_

Ma-tron, _hynaf-wraig_, _gwreigdda_

Mat-ter, _defnydd_; _mater_, _helynt_

Ma-ture, _addfed_; _oedog_; _mewn oed_

Max-im, _arwiredd_, _gosodedig_

May-or, _maer_

Mead-ow, _dôl_, _gweirglawdd_

Mean-ing, _ystyr_, _meddwl_

Mean-ness, _salwedd_, _gwaelder_

Mean-while, _yn y cyfamser_

Mea-sles, _y frech goch_

Meas-ure, _mesur_; _llestraid_; _ffordd_; _trefn_: _mesuro_, _mesur_

Med-al, _bathodyn_

Med-dle, _ymyru_, _ymyraeth_

Meek-ness, _llareidd-dra_, _tiriondeb_

Meet-ing, _cyfwrdd_; _cyfarfod_

Mel-low, _addfed_: _addfedu_

Mem-ber, _aelawd_, _aelod_

Mem-brane, _pilen_, _croenyn_

Men-tal, _meddyliol_

Men-tion, _crybwyll_: _crybwyllo_

Mer-cer, _sidanydd_

Mer-chant, _masnachwr_

Mer-cy, _trugaredd_, _tosturi_

Mere-ly, _yn unig_, _yn hollol_

Mer-it, _haeddiant_: _haeddu_

Mer-ry, _llawen_, _hoenus_

Mes-sage, _cenadwri_, _neges_

Mes-suage, _ty a thyddyn_, _ty a gardd_

Met-al, _delid_, _mettel_

Me-ter, _mesurydd_

Meth-od, _trefn_, _ffordd_, _modd_

Me-tre, _mydr_, _mesur_

Met-tle, _mettel_; _awch_; _calon_

Mid-dle, _canol_, _hanner_

Mid-day, _hanner dydd_, _canol dydd_

Mid-night, _canol nos_

Mid-wife, _byd-wraig_

Might-y, _galluog_, _cadarn_

Mi-grate, _treiglo_, _symmud trigias_

Mil-dew, _y gawod_, _melgawod_

Mild-ness, _tiriondeb_, _tynerwch_

Mile-stone, _careg filldir_

Mill-dam, _cronfa_, _argae melin_

Mill-er, _melinydd_

Mill-pond, _llyn melin_

Mill-ion, _buna_, _miliwn_

Mim-ic, _dynwaredydd_: _dynwaredu_

Mind-ful, _meddylgar_, _gofalus_

Min-er, _mwngloddiwr_

Min-gle, _cymmysg_: _cymmysgu_

Mi-nor, _un dan oed_; _bychan_; _llai_

Min-strel, _clerwr_, _cerddwr_

Mi-nute, _bach_, _manwl_

Min-ute, _munud_: _cofnodi_

Mi-nutes, _cofnodau_

Mir-ror, _drych_; _cynllun_

Mis-chief, _drwg_, _drygioni_: _drygu_

Mis-deed, _drwgweithred_

Mi-ser, _cybydd_, _crintachwr_

Mis-lead, _camarwain_

Mis-sion, _anfoniad_, _cenadaeth_

Mis-take, _camgymmeriad_, _gwall_

Mis-tress, _meistres_, _dysgawdwraig_

Mis-trust, _drwgdyb_, _pryder_

Mi-tre, _capan côr_, _meitr_

Mix-ture, _cymmysg_; _cymmysgiad_

Mod-el, _cynllun_: _cynllunio_

Mod-ern, _newydd_, _diweddar_

Mod-est, _llednais_, _gwylaidd_

Moist-ure, _irdra_, _lleithdra_

Mo-lest, _ystuno_, _aflonyddu_

Mo-ment, _meidyn_, _amrantiad_

Mon-arch, _brenin_, _teyrn_

Mon-day, _dydd Llun_

Mon-ey, _mwnai_, _arian bathol_

Moor-ing, _angorfa_, _angorle_

Mon-ster, _cynfil_, _anghenfil_

Mon-strous, _anghenfilaidd_, _gwrthun_

Month-ly, _misol_, _bob mis_

Moon-light, _goleuleuad_, _lloergan_

Mo-ral, _moeswers_; _moesol_

Mo-rals, _moesau_; _ymarweddiad_

Mo-rass, _cors_, _siglen_

Mor-bid, _heintiol_, _afiach_

Morn-ing, _bore_, _boreu_; _boreuol_

Mo-rose, _anynad_, _anniddig_

Mor-row, _mory_, _y fory_

Mor-sel, _tamaid_, _safnaid_

Mor-tal, _marwol_; _angeuol_

Mor-tals, _daiarblant_, _marwolion_

Mor-tar, _cymrwd_, _mâl-lestr_

Mort-gage, _arwystl_: _arwystlo_

Mort-main, _meddiant anaralladdwy_

Most-ly, _gan mwyaf_, _yn amlaf_

Moth-er, _mam_

Mo-tion, _chwyf_, _chwim_; _ysgogiad_; _cynnygiad_

Mo-tive, _cynhyrfiad_; _egwyddor_

Mot-to, _arwyddair_, _arwyddwers_

Move-ment, _symmudiad_

Mov-ing, _cynhyrfiol_, _ymsymmudol_

Mould-er, _troi yn llwch_, _malurio_

Mould-ings, _addurngerfiadau_

Mould-y, _llwyd_, _brithlwyd_

Moun-tain, _mynydd_, _moel_

Mourn-er, _galarwr_, _cwynfanwr_

Mourn-ful, _galarus_, _trist_, _trwm_

Mourn-ing, _arwylwisg_; _galar_

Mouth-ful, _safnaid_, _tamaid_

Mud-dy, _lleidiog_, _lleidlyd_

Mun-dane, _bydol_, _bydawl_

Mur-der, _llofruddiaeth_: _llofruddio_

Mur-mur, _grwm_, _murmur_: _gwrgnach_

Mur-rain, _pla_, _milbla_

Mus-cle, _cyhyr_, _llyweth_

Mu-sic, _cerddoriaeth_; _peroriaeth_

Mus-tard, _ceddw_, _mwstardd_

Mus-ter, _byddinbrawf_: _byddino_; _profi_

Mus-ty, _llwyd_; _drewllyd_

Mut-ton, _cig dafad_, _mollt_

Muz-zle, _geneu_; _penffrwyn_: _penffrwyno_

Myr-tle, _myrtwydd_

My-self, _mi fy hun_

Nail-er, _hoelydd_, _hoeliwr_

Na-ked, _noeth_, _llwm_; _anarfog_

Name-ly, _wrth enw_; _sef_, _hyny yw_

Nar-rate, _traethu_

Nar-row, _cul_, _cyfyng_: _culhau_

Na-sal, _trwynol_

Nas-ty, _brwnt_; _aflan_, _budr_

Na-tion, _cenel_, _cenedl_

Na-tive, _brodor_, _priodor_; _genedigol_

Na-ture, _anian_, _natur_; _y byd_; _rhyw_

Naugh-ty, _diriaidd_; _drwg_

Na-val, _llyngesawl_; _morawl_

Na-vel, _bogel_; _y canol_

Nau-seous, _gwrthwyneblyd_, _ffiaidd_

Neap-tide, _llanw isel_

Near-er, _nes_, _nesach_, _agosach_

Neat-ness, _destledd_, _tlysni_

Need-ful, _dir_, _rhaid_, _cyfreidiol_

Nee-dle, _nydwydd_; _gwachell_

Need-y, _anghenog_, _tlawd_

Neg-lect, _diofalwch_: _esgeuluso_

Neigh-bour, _cymmydog_

Nei-ther, _nid yr un or ddau_; _na_, _nac_, _ychwaith_

Neigh-ing, _gweryriad_

Neph-ew, _nai_

Nerv-ous, _giawg_, _giawl_, _gewynog_; _nerthol_, _cryf_

Nes-tle, _nythu_; _adeinio_

Nest-ling, _nythgyw_, _cywyn_

Neth-er, _is_, _isach_, _iselach_

Net-tle, _danadl poeth_: _pigo_; _cyffroi_

Nev-er, _erioed_; _byth_

Neu-ter, _amhleidiol_; _canolydd_

New-ness, _newydd-deb_

New-ly, _o newydd_, _yn ddiweddar_

Nick-name, _llysenw_: _llysenwi_

Nig-gard, _crinwas_, _cybydd_: _crintach_

Nim-ble, _cyflym_, _heinif_

Nip-pers, _gefail_, _gefeilan_

No-ble, _ardderchog_, _godidog_; _boneddig_

Nois-y, _trystfawr_, _bloeddfawr_

Non-sense, _ffoledd_, _ffregod_

Non-suit, _anhawl_: _dihawli_

North-ward, _tua 'r gogledd_

Nos-tril, _ffroen_

No-ted, _nodedig_, _hynod_

Noth-ing, _dim_, _diddym_

No-tice, _sylw_, _rhybydd_

No-tion, _tyb_, _barn_, _rhith_

Nov-el, _newydd chwedl_; _newydd_

Nou-rish, _maethu_, _magu_

Nox-ious, _afiach_, _niweidiol_

Nui-sance, _blinbeth_, _casbeth_

Num-ber, _rhif_, _rhifedi_: _rhifo_

Nup-tial, _priodasol_

Nup-tials, _priodas_, _neithior_

Nur-ture, _maeth_, _maethiad_: _meithrin_, _addysgu_

Oat-meal, _blawd ceirch_

O-bey, _ufuddhau_, _ymostwng_

Ob-ject, _gwrthrych_, _nod_: _eithro_, _gwrthwynebu_

Ob-late, _llethbegynol_

O-blige, _rhwymo_; _boddio_

Ob-lique, _gŵyr_, _lleddf_; ystlysol

Ob-long, _hirgul_, _cul_

Ob-scene, _brwnt_, _aflan_

Ob-scure, _aneglur_; _anhawdd_: _tywyllu_; _dyrysu_

Ob-serve, _dal sylw_, _sylwi_; _parchu_, _ufuddhau_

Ob-struct, _attal_, _rhwystro_

Ob-tain, _cael_, _caffael_, _cyrhaeddyd_

Ob-trude, _ymwthio_; _trawsgymmell_

Oc-cult, _cuddiedig_, _dirgel_

Oc-cur, _dygwydd_; _dyfod i gof_

O-cean, _cefnfor_, _yr eigion_

O-dour, _arogl_, _sawyr_

Of-fals, _syrth_; _gweddillion_

Of-fence, _camwedd_, _trosedd_; _tramgwydd_

Of-fend, _troseddu_; _tramgwyddo_

Of-fer, _cynnyg_, _cais_: _offrymu_

Of-fice, _swydd_; _gwasanaeth_; _swyddfa_

Off-sets, _ysgewyll_; _bonflagur_

Off-spring, _hiliogaeth_, _hil_

Oft-en, _yn fynych_, _yn aml_

Oint-ment, _enaint_, _eli_

Ol-ive, _olewydden_

O-men, _argoel_, _rhagarwydd_, _coel_

O-mit, _gadael heibio_; _esgeuluso_

One-ness, _undod_, _unedd_

On-ly, _unig_; _yn unig_; _ond_

On-ward, _ym mlaen_, _rhagof_

O-paque, _tywyll_, _anoleu_

O-pen, _agored_; _amlwg_; _rhydd_

Op-pose, _gwrthwynebu_; _cyferbynu_

Op-press, _gorthrymu_, _gorthrechu_

Op-tic, _dremyr_; _golygawl_, _tremawl_

Op-tion, _dewisiad_: _dewis_

O-ral, _o enau i enau_; _geiriol_

Or-bit, _cylchdro_, _cylchdaith_

Or-chard, _perllan_, _afallach_

Or-dain, _gosod_, _trefnu_; _urddo_

Or-der, _trefn_, _rheol_: _trefnu_; _erchi_

Or-ders, _gorchymmynion_; _urddau_

Or-gan, _organ_; _offeryn_, _peiriant_

Or-phan, _plentyn amddifad_; _amddifad_

Os-trich, _estrys_

Oth-er, _all_, _arall_, _llall_

Ot-ter, _dyfrgi_, _dwfrgi_

O-val, _hirgrwn_, _wyfal_

O-ven, _ffwrn_

O-ver, _ar_, _uchben_, _tros_, _rhy_, _trosodd_

Our-selves, _ni ein hunain_

Out-break, _toriad allan_

Out-cast, _crwydryn_; _alldud_

Out-cry, _gwaedd_, _bloedd_, _dolef_

Out-do, _rhagori_, _blaenu ar_

Out-er, _allanol_, _nes allan_

Out-fit, _darpariad i fordaith_

Out-law, _herwr_; _ysbeiliwr_: _dinoddi_

Out-line, _amlinell_; _brasluniad_

Out-live, _byw yn hwy_, _goroesi_

Out-rage, _dirdra_, _trais_; _terfysg_: _dirtreisio_; _sarhau_

Out-side, _y tu allan_; _allanol_

Out-ward, _allanol_; _i barthau tramor_

Own-er, _perchenog_, _meddianydd_

Ox-ford, _Rhydychain_

Oys-ter, _llymarch_, _llymarchen_

Pack-age, _pynordal_

Pack-et, _sypyn_; _llythyrgod_

Pad-dle, _rhodl_; _rhwyf_: _rhodli_; _rhywyfo_

Pad-lock, _clo march_, _clo egwyd_

Pa-gan, _cenedlddyn_, _pagan_

Pain-ful, _poenus_, _gofidus_; _llafurus_

Paint-ing, _paentiad_; _llun_, _darlun_

Pa-lace, _llys_, _plas_, _palas_

Pal-ate, _taflod y genau_, _gorchfannedd_; _archwaeth_, _blas_

Pal-ing, _cledrgae paliswaith_

Pal-sy, _parlys_, _haint y gïau_

Pal-try, _distadl_, _gwael_

Pam-phlet, _llyfran_, _llyfryn_

Pan-cake, _cremmog_, _crammwyth_

Pan-el, _pennill_, _pedronglyn o esdyllwaith_

Pan-ic, _dychryn_, _arswyd_; _disymmwyth_

Pan-nel, _panel_, _ystrodur_

Pa-pal, _pabawl_, _pabaidd_

Pa-per, _papur_: _papuro_

Pa-pist, _pabydd_

Pa-rade, _rhodres_; _rhwysg_, _ymddangosfa_

Par-cel, _sypyn_; _cyfran_: _rhanu_, _dyranu_

Par-don, _maddeuant_: _maddeu_

Pa-rent, _tad neu fam_, _rhiant_

Par-ing, _piliad_; _crawen_

Par-ings, _pilion_, _naddion_, _creifion_

Par-ish, _plwy_, _plwyf_; _plwyfol_

Par-lour, _parlawr_, _gwestgell_

Par-son, _offeiriad_, _person_

Par-take, _cyfranu_; _cyfranogi_

Par-tial, _rhanol_, _hannerog_; _pleidiol_

Part-ing, _gwahaniad_; _ymadawiad_

Part-ly, _mewn rhan_, _o ran_

Part-ner, _cydwedd_, _cyfranogwr_; _cyfaill_

Part-ridge, _coriar_, _petrusen_

Par-ty, _un_, _rhyw un_; _plaid_; _achos_

Pas-sage, _tramwyfa_, _trosglwydd_; _gwers_, _ymadrodd_

Pas-sion, _dyoddefaint_; _gwŷn_, _nwyd_; _gwylltineb_; _traserch_

Pas-sive, _y goddefai_, _y dioddefai_

Pass-port, _taithdrwydded_

Pas-time, _darchware_, _difyrwch_

Pas-tor, _bugail_; _gweinidog_

Pas-ture, _porfa_: _porfäu_

Pat-ent, _breintlythyr_; _agored_, _cyhoedd_

Pa-tience, _amynedd_, _ymaros_

Pa-tient, _dyn claf_, _claf_; _amyneddus_

Pa-tron, _tadog_, _noddwr_, _ymgeleddwr_

Pat-tern, _llun_, _cynllun_

Pave-ment, _palmant_, _llechlawr_

Pay-ment, _tâl_; _taledigaeth_

Peace-ful, _heddychol_, _heddychlawn_

Peas-ant, _gwladeiddiwr_

Peb-ble, _gröyn_, _caregan_

Ped-ler, _gwicawr_, _gwicwr_

Peer-age, _cyfurddoriaeth_, _pendefigaeth_

Peev-ish, _anynad_, _anfoddog_, _croes_

Pe-nal, _cosbawl_, _ponydiawl_

Pen-ance, _penyd_; _cyfarchwel_

Pen-cil, _pwyntel_: _paentio_, _darlunio_

Pend-ant, _dibynydd_; _clustdlws_; _baner_

Pend-ing, _yn dibynu_; _dan ystyriaeth_

Pen-man, _ysgrifenydd_, _cyfansoddwr_

Pen-ny, _ceiniog_

Pen-sion, _talwobr_, _talddogn_

Pen-sive, _athrist_, _prudd_, _meddylgar_

Peo-ple, _maon_, _pobl_

Pep-per, _poethlys_, _pupur_

Per-ceive, _dirnad_, _canfod_

Per-fect, _perffaith_: _perffeithio_

Per-form, _cyflawni_, _cwblhau_; _chware_

Per-fume, _perarogl_: _perarogli_

Per-haps, _ysgatfydd_, _efallai_

Per-il, _perygl_, _enbydrwydd_

Per-ish, _marw_, _trengi_, _diflanu_

Per-jure, _tyngu anudon_, _anudoni_

Per-mit, _trwyddedlythyr_: _caniatau_, _goddef_

Per-plex, _dyrysu_; _dwysflino_

Per-sist, _sefyll at_; _dal at_; _taeru_

Per-son, _dyn_, _gwr neu wraig_, _un_; _dynsawd_; _dull_

Per-spire, _anadlu trwodd_; _chwysu_

Per-suade, _darbwyllo_; _annog_; _eiriol_

Per-tain, _perthyn_: _perthynu_

Per-vade, _tryddedu_; _treiddio_, _ymledu_

Per-verse, _gwrthgas_: _gwyrdroi_

Per-use, _tryddarllen_, _darllen_

Pet-als, _blodeuddail_

Pet-ty, _back_, _gwael_, _isel_

Phan-tom, _tremyniad_, _drychiolaeth_

Phi-al, _costrelig_; _ffiol_

Phon-ics, _seinddysg_

Phys-ic, _meddyginiaeth_

Phys-ics, _anianyddiaeth_, _dansoddiaeth_

Pick-axe, _cyfegydd_, _caibfwy ell_

Pick-et, _pigbawl_; _gwyliwr_

Pic-ture, _llun_, _darlun_: _darlunio_

Pierc-ing, _llym_, _tostlym_, _treiddiol_

Pil-fer, _chwiwladrata_, _chwiwbigo_

Pil-grim, _pererin_: _pererinio_

Pil-low, _gobenydd_, _clustog_: _clustogi_

Pi-lot, _llonglywydd_, _llywiedydd_

Pim-ple, _piloryn_, _pisgen_

Pin-cers, _gefail_, _gwrthrimyn_

Pin-fold, _gwarchae_

Pin-ion, _asgell_; _hual_, _aden_: _esgyllrwymo_, _hualu_

Pin-nace, _ysgafnlong_, _badlong_

Pi-ous, _duwiol_, _crefyddol_

Pi-rate, _morleidr_

Pis-tol, _llawddryll_

Pis-ton, _diblath_, _gwasglath_, _ceuffon_

Pitch-er, _piser_, _cunnog_

Pitch-fork, _pig_, _pigfforch_

Pit-y, _trugarhau_, _tosturi_

Piv-ot, _corddyn_, _colyn_; _pegwn_

Pla-card, _hysbysiad_, _egluryn_

Plain-ness, _gwastadrwydd_; _gonestrwydd_

Plain-tiff, _cwynwr_, _hawl-blaid_

Plan-et, _planed_, _goruchiad_

Plas-ter, _cymmrwd_, _plastar_

Plat-form, _llwyfan_; _esgynlawr_

Plat-ter, _dysgl_, _noe_

Play-ful, _chwareugar_

Plead-ing, _arddaliad_, _dadleuad_

Plead-ings, _cynghawsaeth_

Pleas-ant, _hyfryd_, _teg_; _llon_, _tirion_

Pleas-ing, _boddus_, _boddhaol_; _hoff_

Plea-sure, _hyfrydwch_; _difyrwch_

Plen-ty, _helaethrwydd_, _amledd_; _digonedd_

Pli-ant, _hyblyg_, _ystwyth_

Plough-share, _swch_

Plu-mage, _plu_; _esgyll_

Plumb-er, _plymiwr_, _plwmweithydd_

Plun-der, _ysbail_: _anrheithio_

Plu-ral, _lliosog_, _lluosog_

Ply-ing, _plygiad_; _ymroddiad_

Poach-ing, _herw-hela_

Pock-et, _llawgell_, _llogell_: _llogellu_

Po-em, _pryddest_, _cân_, _cerdd_

Poe-sy, _awenyddiaith_; _barddoneg_

Po-et, _awenydd_, _prydydd_, _bardd_

Poign-ant, _llym_, _pigog_

Point-er, _pwyntiwr_; _cyfeirgi_

Poi-son, _gwenwyn_: _gwenwyno_

Po-lar, _pegynawl_

Po-lice, _dinaslywodraeth_, _treflywiaeth_

Pol-ish, _caboledd_: _caboli_

Po-lite, _moesawg_, _moesgar_

Pol-lute, _halogi_, _diwyno_

Pom-pous, _rhwysgfawr_, _gorwych_

Pon-der, _ystyried_, _myfyrio_

Pon-tiff, _archoffeiriad_, _y Pab_

Po-ny, _corfarch_; _merlyn_, _merlen_

Poor-ly, _yn salw_; _gwael_

Pop-lar, _poplysen_

Po-rous, _chwysdyllog_; _tyllog_

Por-poise, _llemidydd_

Port-age, _arian clud_; _porthdal_

Por-tend, _argoeli_, _darogan_

Port-er, _porthor_, _drysor_

Por-tion, _rhan_, _cyfran_; _cynnysgaeth_

Port-hole, _cyflegrdwll_, _gwndwll_

Por-trait, _arlun_, _llun_; _arluniad_

Por-tray, _arlunio_; _paentio_

Pos-sess, _meddu_, _meddiannu_, _perchenogi_

Pos-set, _posel_, _meiddlyn_

Post-age, _llythrdoll_

Post-pone, _troi heibio_; _oedi_, _gohirio_

Post-script, _olysgrifen_

Pos-ture, _ystum_, _sefyllfa_; _agwedd_

Po-tent, _erddrym_, _galluog_, _cryf_

Pot-ter, _crochenydd_, _priddlestrydd_

Poul-tice, _sugaethan_; _meddalai_

Poul-try, _dôf-adar_; _adarfa_

Pound-er, _pwyedydd_; _cyflegr_

Pow-der, _llwch_, _pylor_: _llychu_

Pow-er, _gallu_, _nerth_; _awdurdoa_

Prac-tice, _arfer_, _arferiad_

Prac-tise, _arferu_, _ymarfer_

Pray-er, _gweddi_, _deisyfiad_

Preach-er, _pregethwr_

Preach-ing, _pregethiad_

Pre-cede, _blaenori_, _blaenu_

Pre-cept, _gorchymmyn_, _cyfraith_

Pre-cinct, _cylchran_, _terfyn_

Pre-cious, _gwerthfawr_, _drud_

Pre-cise, _pendant_, _penodol_; _cywir_

Pre-clude, _rhagrwystro_, _rhagattal_

Pre-dict, _rhagfynegi_; _daroganu_

Pref-ace, _rhaglith_: _rhagymadroddi_

Pre-fect, _rhaglaw_

Pre-fer, _dewis o flaen_, _blaenberchi_

Pre-fix, _blaenddod_, _arddodiad_: _darddodi_

Preg-nant, _beichiog_; _ffrwythlawn_

Prel-ate, _esgob_

Pre-lude, _rhagchware_; _cynarawd_

Pre-mier, _cynwas_, _prif weinidog_; _blaenaf_, _penaf_, _prif_

Pre-mise, _rhagosod_, _cynseilio_

Pre-pare, _paratoi_, _darparu_

Pres-age, _rhagarwydd_, _arwydd_: _darogan_

Pre-scribe, _rhagnodi_, _cyfarwyddo_

Pres-ence, _gŵydd_, _presennoldeb_

Pre-sent, _anrheg_; _presennol_: _anrhegu_; _dangos_

Pre-serve, _cyffeithfwyd_: _cadw_, _noddi_, _gwared_; _cyffeithio_

Pre-side, _rheoli_, _rhageistedd_

Pres-sure, _gwasgiad_, _gwasgfa_

Pre-sume, _tybio_, _meddylied_; _anturio_

Pre-tence, _cyfrith_; _ymhoniad_

Pre-tend, _lledrithio_, _ffugio_

Pret-ty, _pefr_, _tlws_

Pre-vail, _tycio_, _llwyddo_, _gorchfygu_

Pre-vent, _rhagodi_; _rhwystro_

Priest-hood, _offeiriadaeth_

Pri-mate, _prif esgob_

Prim-er, _cynlyfr_; _penllythyren_

Prin-cess, _tywysoges_

Print-er, _argraffydd_, _argraffwr_

Print-ing, _argraffyddiaeth_

Pri-or, _penmynach_; _cyntaf_, _blaenorol_

Pri-son, _carchar_, _carchardy_

Pri-vate, _cuddfa_, _uniged_; _cyfrin_, _dirgel_; _unig_; _neillduol_

Priv-y, _cyfrin_, _dirgel_, _cudd_

Pro-bate, _cymmynbrawf_

Prob-lem, _dyrys destyn_, _dyfnbwngc_

Pro-ceed, _cynnyrchiant_, _ennill_; _dilyn_, _myned ym mlaen_; _deillio_, _tarddu_

Pro-cess, _mynediad ym mlaen_; _cynghawsedd_

Pro-claim, _cyhoeddi_

Proc-tor, _dirprwywr_, _dadleuwr_

Pro-cure, _ceisio_, _caffael_; _prynu_

Pro-duce, _cynnyrch_: _dwyn allan_; _cynnyrchu_, _deilliaw_

Prod-uct, _daill_, _cynnyrch_

Pro-fane, _halog_; _halogedig_: _halogi_

Pro-fess, _proffesu_, _cyffesu_; _dilyn_

Prof-fer, _cynnygiad_: _cynnyg_

Pro-file, _ystlyswyneb_, _ystlyswedd_

Pro-fit, _budd_, _elw_: _buddio_, _ennill_

Pro-found, _dwfn_, _gorddwfn_; _mawr_

Pro-fuse, _trahael_, _afradus_

Pro-gress, _mynediad ym mlaen_, _ymdaith_, _cynnydd_

Pro-ject, _dyfais_, _cynllun_: _dyfeisio_

Pro-logue, _rhagymadrodd_, _rhagarawd_

Pro-long, _estyn_, _hwyhau_, _oedi_

Prom-ise, _addaw_, _addewid_: _addaw_, _addo_

Pro-mote, _dwyn ym mlaen_; _dyrchafu_

Pro-noun, _rhagenw_

Pro-nounce, _traethu_, _cyhoeddi_, _acenu_

Proof-sheet, _prawflen_, _proflen_

Pro-pel, _gyru ym mlaen_

Pro-pense, _tueddol_, _chwannog_

Prop-er, _priod_, _priodol_; _cymhwys_

Proph-et, _proffwyd_

Pro-pose, _cynnygiad_: _bwriadu_; _cynnyg_

Pro-rogue, _gordori_, _gohirio_

Pros-pect, _ardrem_, _rhagolwg_

Pros-per, _llwyddo_; _cynnyddu_

Pros-trate, _ar lawr_: _ymostwng_

Pro-tect, _amddiffyn_, _noddi_

Pro-test, _gwrthfarn_: _gwrthdystio_

Pro-tract, _oedi_, _gohirio_, _estyn_

Pro-trude, _gwthio ym mlaen_, _hyrddu_

Proud-ly, _yn falch_; _yn rhyfygus_

Prov-erb, _dareb_, _diareb_

Pro-vide, _darpar_, _darparu_

Prov-ince, _talaeth_; _gorchwyliaeth_

Prov-ing, _profiad_: _yn profi_

Pro-voke, _annog_, _cyffroi_, _blino_

Prov-ost, _uchelfaer_, _arlywydd_

Prox-y, _dirprwy_

Pru-dence, _callineb_, _pwyll_

Pru-dent, _synwyrol_, _deallus_

Pry-ing, _chwileniad_; _chwilgar_

Pub-lic, _cyffredin_, _gwladwriaeth_; _cyhoeddus_

Pub-lish, _cyhoeddi_, _gosod allan_

Pud-ding, _poten_

Pud-dle, _corbwll_; _lleidiog_

Pul-let, _cywen_, _cyw iar_

Pul-ley, _chwerfan_

Pul-pit, _areithle_, _areithfa_

Pul-pous, _bywynaidd_; _meddal_

Pun-gent, _llym_, _irad_, _tost_

Pun-ish, _cosbi_, _ceryddu_

Pu-pil, _canwyll llygad_; _dysgybl_

Pup-py, _colwyn_, _ci bach_

Pur-blind, _cibddall_

Pur-chase, _pryniad_: _prynu_

Pure-ly, _purion_, _yn bur_

Purg-ing, _carthiad_: _rhyddni_

Pur-loin, _darnguddio_; _lladrata_

Pur-port, _amcan_, _ystyr_: _arwyddo_

Pur-pose, _amcan_, _bwriad_: _amcanu_

Pur-sue, _canlyn_: _ymlid_

Pur-suit, _ymlid_, _erlid_

Pus-tule, _pendduyn_, _goryn_

Pu-trid, _braenllyd_, _llygredig_

Put-ty, _sythdoes_, _glud_

Puz-zle, _dyryswch_: _dyrysu_

Qua-drant, _pedryran_

Quak-ing, _cryn_, _cryndod_; _crynawl_

Quar-rel, _amrafael_: _amrafaelio_

Quar-ry, _cloddfa_: _ysglyfio_

Quar-ter, _pedwareddran_; _parth_, _man_; _crynog_, _pêg_; _gorsaf_: _pedwaru_; _llettya_

Quar-to, _pedwarplyg_

Qua-ver, _crychyn_: _crychnodi_

Que-rist, _gofynwr_, _holydd_

Que-ry, _holiad_, _gofyniad_: _gofyn_, _holi_

Ques-tion, _gofyniad_: _holi_, _gofyn_

Quick-en, _bywhau_; _brysio_

Quick-sand, _traeth byw_, _sugndraeth_

Qui-et, _llonyddwch_; _llonydd_: _llonyddu_

Quil-let, _clytyn_, _garddan_

Quiv-er, _saethgawell_: _crynu_

Quo-tient, _cynniferydd_

Rab-bit, _cwningen_

Rab-ble, _gwerinos_, _dynionach_

Rab-id, _cynddeiriog_, _gorphwyllog_

Ra-dix, _gwreiddyn_; _dechreuad_

Raf-ter, _ceibren_, _tylath_

Rag-ged, _carpiog_, _bratiog_

Rag-ing, _cynddeiriogiad_; _gwyllt_, _creulawn_

Rail-ing, _cledrgae_; _canllawiad_

Rai-ment, _dillad_; _gwisg_

Rain-bow, _enfys_, _bwa 'r gwlaw_

Rain-y, _gwlawog_

Rais-ing, _codiad_, _dyrchafiad_

Ral-ly, _gwawdio_; _adfyddino_

Ram-ble, _gwib_, _gwibdaith_: _gwibio_

Ram-mer, _hyrddiedydd_; _gordd_

Ram-ming, _hyrddiad_, _pwyad_

Ram-pant, _ar y rhuthrnaid_; _afreolus_

Ram-part, _gwrthglawdd_, _rhagfur_

Ran-cid, _mws_, _drewllyd_

Ran-cour, _hen lid_, _cenfigen_

Ran-dom, _antur_; _damweiniol_; _ar antur_, _heb feddwl_

Rang-ing, _trefniad_; _crwydrawl_

Ran-sack, _gorchwylio_; _ysbeilio_

Ran-som, _prydwerth_: _prynu_

Rap-id, _chwyrn_; _gwyllt_

Rap-ture, _perlewyg_, _gorllonedd_

Rare-ly, _yn anaml_, _yn brin_

Ras-cal, _dyhiryn_

Rash-ness, _byrbwylldra_

Ra-tio, _dogn_, _cyfran_; _cyfartaliaeth_

Rath-er, _yn hytrach_, _o flaen_

Rat-tle, _rhugl_: _rhugldrystio_

Ra-ven, _cigfran_

Ra-vine, _crigyll_, _morgilfach_

Rav-ing, _penwendid_; _penwan_

Rav-ish, _treisio_; _gorlloni_

Ra-zor, _ellyn_

Reach-ing, _cyrhaeddiad_

Read-ing, _darlleniad_

Read-y, _parod_; _hwylus_, _medrus_

Re-al, _gwir_, _gwirioneddol_; _diffuant_

Reap-er, _medwr_, _medelwr_

Rear-guard, _olfyddin_, _olwarchadlu_

Rea-son, _rheswm_: _rhesymu_

Re-bate, _rhigoli_, _toli_

Re-bel, _gwrthryfelwr_: _gwrthryfela_

Re-bound, _gwrthnaid_: _gwrthneidio_

Re-build, _adadeiladu_, _ailadeiladu_

Re-buke, _cerydd_: _ceryddu_

Re-but, _olgilio_

Re-call, _gwrthalw_, _adalw_

Re-cant, _dadgyffesu_, _dad-ddywedyd_

Re-cede, _encilio_: _ymattal_

Re-ceipt, _derbyneb_, _taleb_

Re-ceive, _derbyn_; _caffael_

Re-cent, _newydd_, _gonewydd_

Re-cess, _cil_, _encil_; _ciliad_

Re-cite, _adrodd_, _datgan_

Reck-less, _diofal_, _difeddwl_

Reck-on, _cyfrif_, _rhifo_; _barnu_

Re-claim, _adferu_, _dychwelyd_

Re-cline, _lledogwyddo_, _lledorwedd_

Re-cord, _cofiant_, _coflyfr_: _coffäu_, _cofrestru_

Re-cruit, _adlenwad_: _adlenwi_, _codi gwyr_

Rec-tor, _person_, _periglor_

Re-cur, _adredeg_, _adgyrchu_

Red-dish, _lledgoch_, _cochlyd_

Re-deem, _prynu_, _rhyddhau_

Re-doubt, _rhag-gaer_, _rhagfur_

Re-dress, _esmwythâd_: _iawni_, _ysgafnhau_

Re-duce, _ennill_, _adferu_; _iselu_, _goresgyn_

Re-fer, _gosod ar_, _cyfeirio at_, _golygu_

Re-fine, _puro_, _coethi_

Re-fit, _adgyweirio_, _aildaclu_

Re-flect, _adlewyrchu_; _adfyfyrio_; _gwarthruddo_

Re-flux, _gwrthlif_, _adlif_

Re-form, _diwygiad_: _diwygio_

Re-fract, _gwrthdori_, _dadlewyrchu_

Re-frain, _attal_, _ffrwyno_: _ymarbed_

Re-fresh, _adloni_, _dadebru_

Ref-uge, _nawdd_, _noddfa_

Re-fund, _ad-dalu_, _adferu_

Re-fuse, _ysgubion_, _gwehilion_: _nacäu_, _gomedd_

Re-fute, _gwrthbrofi_, _dadbrofi_

Re-gain, _adgaffael_, _ailennill_

Re-gal, _breiniol_, _teyrnol_

Re-gale, _gwledd_, _breninwledd_

Re-gard, _golygiad_; _parch_: _golygu_; _parchu_

Re-gent, _llywydd_: _rhaglywyddu_

Re-gion, _ardal_, _bro_; _awyrbarth_; _lle_

Re-gret, _gofid_, _blinder_: _gofidio_

Re-hearse, _datgan_; _prawfdraethu_

Re-ject, _gwrthod_; _anghymmeradwyo_

Re-joice, _llawenhau_, _llawenychu_

Re-lapse, _adlithriad_: _adlithro_

Re-late, _adrodd_; _perthynu_

Re-lax, _llac_: _llacau_, _llwfrhau_

Re-lay, _newidfeirch_; _bwlch_, _adwy_

Re-lease, _rhyddhâd_: _rhyddhau_

Re-lent, _tyneru_; _edifarhau_

Rel-ic, _gweddill_, _gwarged_

Rel-ict, _gweddw_, _gwraig weddw_

Re-lief, _cymhorth_, _cynnorthwy_

Re-lieve, _cynnorthwyo_; _symmud_

Rel-ish, _blas_, _chwaeg_: _blasu_, _archwaethu_

Re-ly, _hyderu_, _ymddiried_

Re-main, _aros_, _trigo_; _parhau_

Re-mains, _gweddillion_; _corph y marw_

Re-mand, _gwrthalw_, _adanfon_

Re-mark, _nod_, _nodiad_: _nodi_, _sylwi_

Re-mind, _adgofio_, _ailgoffa_

Re-miss, _llac_, _esgeulus_, _hwyrfrydig_

Re-mit, _dychwelyd_, _adanfon_, _trosglwyddo_

Re-morse, _ymgno_, _dwysbigiad_

Re-mote, _pell_, _anghyfagos_

Re-move, _mud_; _symmudfa_: _mudo_, _symmudo_, _symmud_

Rend-er, _rhwygwr_: _talu_, _ad-dalu_

Re-new, _adnewyddu_

Re-nounce, _ymwrthod_, _gwadu_

Re-nown, _bri_, _clod_: _enwogi_

Rent-al, _ardrethlyfr_, _rhentlyfr_

Re-pair, _cyweiriad_: _adgyweirio_

Re-past, _pryd o fwyd_, _adlonbryd_

Re-pay, _ad-dalu_, _talu yn ol_

Re-peal, _diddymiad_: _diddymu_

Re-peat, _mynychnod_: _ailadrodd_, _adrodd_

Re-pel, _gwrthguro_, _cilgwthio_

Re-pent, _edifarhau_

Re-pine, _ymofidio_, _grwgnach_

Re-place, _adsefydlu_

Re-ply, _ateb_, _gwrthateb_: _atebu_

Re-port, _chwedl_; _mynegiad_: _adrodd_, _mynegi_

Re-pose, _pwys_, _gorphwysdra_: _gorphwyso_, _huno_, _hyderu_

Re-press, _attaliad_: _attal_, _ffrwyno_

Re-prieve, _gwarant dienoed_: _dienoedi_

Re-proach, _sarhâd_, _gwarth_: _gwaradwyddo_

Re-proof, _ceryddu_, _argyhoeddiad_

Re-prove, _ceryddu_, _argyhoeddi_

Rep-tile, _ymlusgiad_; _ymlusgawl_

Re-pulse, _cilgwth_: _gwrthguro_

Re-pute, _parch_, _bri_: _golygu_, _parchu_

Re-quest, _arch_, _deisyfiad_: _deisyfu_

Re-quire, _gofyn_, _ceisio_

Re-quite, _talu_, _gwobrwyo_

Res-cue, _gwarediad_: _gwaredu_

Re-search, _adchwiliad_: _dyfalgeisio_

Re-sent, _atteimlo_

Re-serve, _olfyddin_; _pwylledd_: _cadw_

Re-side, _aros_, _cartrefu_, _preswylio_

Re-sign, _rhoddi i fyny_, _ymroddi_

Re-sist, _gwrthsefyll_, _gwrthwynebu_

Re-solve, _bwriad_: _bwriadu_, _penderfynu_

Re-sort, _cynhulliad_: _cynniwair_

Re-sound, _adseinio_, _adleisio_

Re-source, _adnawdd_; _noddfa_; _dyfais_

Re-spect, _cymmeriad_, _bri_, _parch_: _parchu_, _ystyried_

Re-spire, _anadlu_

Res-pite, _oed_, _oediad_, _hamdden_: _adoedi_, _gohirio_

Re-spond, _atebu_, _gorebu_

Rest-ful, _llonydd_, _esmwyth_

Rest-ive, _rhusog_, _ystrangclyd_

Rest-less, _aflonydd_; _dihun_

Re-store, _adroi_, _adferu_; _achub_

Re-strain, _attal_, _ffrwyno_, _cyfyngu_

Re-straint, _attaliad_, _caethiad_

Re-strict, _attal_, _cyfyngu_

Re-sult, _canlyniad_: _tarddu_, _deillio_

Re-sume, _adgymmeryd_, _ailddechre_

Re-tail, _manwerth_: _manwerthu_

Re-tain, _dal_, _cadw_; _cofio_

Re-tard, _rhwystro_, _lluddias_, _attal_

Re-tire, _ymneullduo_, _encilio_

Re-tort, _fferyllwydryn_; _gwrthsen_: _gwrthsenu_

Re-trace, _adolrhain_

Re-tract, _dadgyffesu_, _dad-ddywedyd_

Re-treat, _cil_, _encil_: _cilio_, _encilio_

Re-trench, _amgloddio_; _amddiffyn_

Re-turn, _dychwel_, _dychweliad_: _dychwel_

Re-veal, _datguddio_, _egluro_

Re-venge, _dialedd_: _dialeddu_, _dial_

Re-vere, _parchu_, _anrhydeddu_

Re-verse, _tro_, _troad_, _cyfnewidiad_: _gwrthdroi_, _gwrthwynebu_

Re-vert, _troi yn ol_, _dychwelyd_

Re-view, _adolygiad_: _adolygu_

Re-vile, _difenwi_, _cablu_

Re-vise, _eilbrawf_: _ailbrofi_

Re-vive, _adfywio_, _bywiogi_

Re-voke, _gwrthalw_, _diddymu_

Re-volt, _gwrthryfel_: _gwrthryfela_

Re-volve, _amdroi_, _cylchdroi_

Re-ward, _gwobr_: _gwobrwyo_

Rich-es, _cyfoeth_, _golud_, _meddiannau_

Rich-ness, _cyfoethogrwydd_; _brasder_

Rick-ets, _y llechau_, _y llechi_

Rid-den, _marchogedig_

Rid-dle, _dychymmyg_; _rhidyll_: _rhidyllu_

Rid-ing, _parthran_; _marchogiad_

Rig-ging, _tacliad_, _gwisgiad_

Right-eous, _cyfiawn_, _uniawn_

Rig-id, _anhyblyg_, _llym_

Ri-gour, _gerwindeb_, _llymder_

Ring-worm, _gwreinyn_, _taroden_

Ri-ot, _afreolaeth_, _terfysg_: _gloddesta_; _terfysgu_

Ris-ing, _codiad_; _esgynfa_

Ri-val, _cydymgeisiwr_: _cydymgeisio_

Riv-er, _afon_

Roar-ing, _rhuad_; _rhuadwy_

Rob-ber, _ysbeiliwr_, _lleidr_

Ro-bust, _cadarn_, _cryf_, _grymus_

Rock-et, _tanbelen_

Roe-buck, _iwrch_, _carw_

Ro-man, _Rhufeinwr_; _Rhufeinig_

Ro-mance, _ffugdraith_: _ffugchwedleua_

Ro-sin, _ystor_, _ystawr_: _ystoru_

Rot-ten, _braenllyd_, _braenedig_

Rough-cast, _braslun_; _garwgresten_

Rough-ly, _yn arw_, _yn erwinol_

Rough-ness, _garwder_, _gerwindeb_

Round-ness, _crynder_

Rous-ing, _deffroad_; _cyffroad_: _cyffröus_

Rou-tine, _arfer_, _arferiad_, _defod_

Roy-al, _breninol_, _teyrnaidd_

Rub-bish, _malurion_; _gwedillion_

Rud-der, _llyw_

Rud-dy, _rhudd_, _rhuddgoch_

Rude-ness, _difoesedd_, _anfoes_

Ruff-ian, _hurlofrudd_, _adyn_; _ffyrnig_

Ruf-fle, _crychio_, _annhrefnu_; _cyffroi_

Rug-ged, _garw_, _sarug_; _anwastad_

Ru-in, _dystryw_, _dinystr_; _adfail_: _dystrywio_; _diadeilio_

Rul-er, _llinellwr_, _rheolwr_, _llywydd_

Rum-mage, _manwl chwilio_

Ru-mour, _chwedl_, _gair_: _cyhoeddi_

Run-ner, _rhedydd_, _rhedegydd_, _rhedegwr_

Run-ning, _rhedegog_; _rhedeg_

Rup-tion, _breg_, _toriad_, _rhwygiad_

Rup-ture, _rhwyg_; _toriad llengig_

Ru-ral, _gwledig_, _gwladol_; _moesol_

Rush-ing, _rhuthriad_, _ymwthiad_

Rus-tic, _gwerinwr_; _gwerinol_

Rust-y, _rhydlyd_; _llwyd_

Ruth-ful, _tosturiol_, _trugarog_

Rye-bread, _rhygfara_

Sab-bath, _gorphwysfa_; _Sabbath_

Sa-bre, _byrgleddyf_

Sack-cloth, _sachlen_, _sachliain_

Sack-ing, _difrodiad_; _sachiad_

Sa-cred, _santaidd_, _cyssegredig_

Sad-dle, _cyfrwy_: _cyfrwyo_

Sad-ness, _tristwch_, _prudd-der_

Safe-guard, _amddiffynfa_, _ymdeithnawdd_

Safe-ty, _diogelwch_, _diogelfa_

Sail-cloth, _hwyl-liain_

Sail-or, _morwr_, _llongwr_

Sal-ine, _halenawg_, _hallt_

Sal-low, _merhelygen_; _melynlwyd_

Sa-loon, _uchelneuadd_

Salt-ish, _halltaidd_

Sal-vage, _achubdal_

Sa-lute, _cyfarch_, _anerch_: _cyfarch_

Sam-ple, _golygyn_, _cynbrawf_

Sanc-tion, _cadarnhâd_: _cadarnhau_

San-guine, _gwaedlyd_, _gwresog_

Satch-el, _trythgod_, _llyfrgod_

Sav-age, _anwariad_; _gwyllt_, _ffyrnig_: _anwareiddio_, _creuloni_

Sau-cy, _coeg_, _cras_; _coeglyd_

Sav-ing, _achubiad_; _cadwedigol_

Sav-iour, _achubwr_, _gwaredwr_

Sa-vour, _sawr_, _arogl_; _blas_: _archwaethu_

Saw-dust, _llifion_, _lliflwch_

Saw-yer, _llifiwr_, _llifiedydd_

Say-ing, _dywediad_, _ymadrodd_, _gair_

Scab-bard, _gwain cleddyf_

Scaf-fold, _esgynlawr_, _esgynlwyd_

Sca-lade, _muresgyniad_, _dringediad_

Scan-dal, _tramgwydd_; _gwarth_: _athrodi_, _gwaradwyddo_

Scan-ning, _chwiliad_, _profiad_

Scan-ty, _prin_, _cwta_, _bychan_

Scat-ter, _gwasgaru_, _chwalu_

Scep-tic, _amheuwr_

Scep-tre, _teyrnwialen_

Sched-ule, _chwaneglen_, _dibynlen_

Schol-ar, _ysgolhaig_, _ysgolawr_

Sci-ence, _gwyddiant_; _trefniant_; _celfyddyd_

Scis-sors, _gwellifyn_; _myswrn_

Scorch-ing, _deifiad_, _crasboethiad_

Scorn-ful, _ysgornllyd_, _diystyrllyd_

Scoun-drel, _dyhiryn_, _adyn_

Scour-ing, _ysgwriad_, _arloesiad_

Scram-ble, _ciprys_: _ciprysu_

Scrap-ing, _crafion_, _creifion_

Scrib-ble, _coegysgrifen_: _brasysgrifenu_

Scrip-ture, _ysgrythyr_

Scrub-bing, _rhwbiad_

Scru-ple, _anon_; _petrusder_: _petruso_

Scuf-fle, _ceintach_: _ceintachu_, _ymdynu_

Sculp-tor, _cerfiedydd_, _cerfiad_

Scut-tle, _cawell_, _cafn_; _gwaddedig_

Sea-man, _morwr_, _llongwr_

Sea-son, _tyhmor_, _amser_, _pryd_: _tymheru_, _pereiddio_, _blasuso_

Sea-weed, _mordywys_, _gwymon_

Se-cede, _ymwahanu_, _hanredu_

Se-clude, _cau allan_, _gwrthod_

Sec-ond, _ail_, _pleidiwr_, _cefnogwr_: _eiliaw_, _cynnorthwyo cefnogi_

Se-cret, _cyfrinach_, _diogelwch_; _cuddiedig_, _dirgel_

Se-crete, _cuddio_, _didoli_, _neillduo_

Sec-tion, _toriad_, _rhan_, _dosparth_

Se-cure, _diogel_, _sicr_; _diogelu_, _sicrhau_

Se-date, _tawel_, _digynhwrf_, _esmwyth_

Se-duce, _denu_, _llithio_, _hudo_

See-ing, _gwelediad_, _y golwg_; _yn gymaint_, _gan fod_, _gan_

Seem-ly, _gweddaidd_, _hardd_; _cymhwys_

Seg-ment, _dernyn_, _tafellddarn_

Seign-ior, _arglwydd_, _meistr_

Seiz-ure, _daliad_, _attafaeliad_

Sel-dom, _yn anfynych_, _yn anaml_

Se-lect, _dewisol_: _dewis_, _dethol_

Self-ish, _hunanol_

Self-same, _yr un_, _nid arall_

Sell-ing, _gwerthiad_, _gwerthedigaeth_

Sen-ate, _senedd_, _seneddr_

Sense-less, _ynfyd_, _ffol_, _disynwyr_

Sen-tence, _barn_, _dedfryd_, _brawddeg_: _barnu_, _dedfrydu_

Sen-try, _gwyliwr_, _gwyliedydd_

Se-quel, _canlyniad_, _diweddiad_

Se-rene, _teg_, _tawel_, _hinonaidd_: _tawelu_, _lloni_

Ser-mon, _pregeth_; _traethawd_

Ser-pent, _sarph_

Ser-vant, _gwas_, _gweinidog_

Ser-vice, _gwasanaeth_; _hail_

Ser-vile, _gwasawl_, _caethwasaidd_

Ses-sion, _eisteddfa_, _eisteddfod_

Set-tle, _cadairfaingc_: _sefydlu_, _sicrhau_; _gwastadhau_, _penderfynu_

Sev-en, _saith_

Sev-er, _didoli_, _gwahanu_, _dosparthu_

Se-vere, _tost_, _llym_, _creulawn_

Sew-er, _gwnïwr_; _dyfrffos_

Sex-ton, _bedd-dorwr_, _clochydd_

Shab-by, _bawaidd_, _gwael_

Shac-kle, _hual_, _gefyn_: _hualu_, _llyffetheirio_

Shad-ow, _cysgod_; _rhuth_; _cysgodi_

Shak-ing, _cryniad_, _ysgydiad_

Shal-low, _basle_; _bas_, _beisiawg_

Sham-bles, _cigfa_, _cigle_

Shame-ful, _gwaradwyddus_, _gwarthus_

Shape-less, _aflunaidd_, _dilun_

Shar-ing, _rhaniad_; _cyfranogiad_

Sharp-en, _awchu_, _hogi_

Shat-ter, _dryllio_, _chwilfriwio_

Shav-ing, _eilliad_; _rhasglio_

Shav-ings, _gonaddion_, _rhasglion_

Sheath-ing, _gweiniad_; _amblangciad_

Sheep-fold, _cail_, _corlan_

Sheep-walk, _defeidiawg_, _pordir defaid_

Sheer-grass, _hesg_

Shell-fish, _cragenbysg_

Shel-ter, _cysgod_, _achles_: _cysgodi_

Shelv-ing, _llechweddaidd_; _llethrog_

Shep-herd, _bugail_, _bugeilydd_

Sher-iff, _sirydd_

Shil-ling, _swllt_

Shin-ing, _claer_, _dysglaer_

Ship-wreck, _llongdor_; _llongdoriad_

Ship-wright, _llongsaer_, _saer llongau_

Shiv-er, _asgri_, _delltddarn_: _crynu_

Shock-ing, _echryslawn_, _arswydus_

Shoe-ing, _archeniad_; _pedoliad_

Short-en, _byrhau_, _cwtogi_

Short-ly, _yn fyr_, _ar fyr_, _yn fer_

Should-er, _ysgwydd_, _yspawd_: _ysgwyddo_

Shout-ing, _bloeddiad_, _banllefiad_

Show-er, _cawod_: _cawodi_

Shrewd-ness, _cyfrwysdra_, _calldra_

Shriv-el, _crychu_, _crebychu_

Shud-der, _crynfa_: _crynu_

Shuf-fle, _rhithesgus_: _cyfrwysdroi_

Shut-ter, _cauad_, _gwerchyr_

Shut-tle, _gwenol gwehydd_

Sic-kle, _cryman_, _nillai_

Sick-ly, _clafus_, _clwyfus_, _lledglaf_

Side-board, _ystlysfwrdd_

Side-ways, _yn gyfarystlys_, _yn wysg ei ochr_

Sigh-ing, _ucheneidiad_, _ochain_

Sig-nal, _arwydd_, _awgrym_; _hynod_: _hynodi_

Sig-net, _sel_, _insel_, _selfodrwy_

Sign-ing, _llawnodiad_, _seliad_

Si-lence, _taw_, _gosteg_: _gostegu_, _tawelu_

Si-lent, _dystaw_; _mud_; _didwrf_

Silk-worm, _sidanbryf_, _pryf sidan_

Sil-ly, _ffol_, _ansynwyrol_

Sil-ver, _arian_: _arianu_

Sim-mer, _lledferwi_, _sician_

Sim-ple, _cyffin_; _syml_; _annichellgar_; _digymmysg_

Sim-ply, _yn syml_; _yn unig_

Sin-cere, _gwir_, _cywir_, _diragrith_

Sin-ew, _gaw_, _gewyn_

Sin-ful, _pechadurus_, _camweddus_

Sin-gle, _syml_; _unig_, _unigol_

Sink-ing, _suddiad_, _soddiad_; _treuliad_

Sin-ner, _pechadur_, _troseddwr_

Sis-ter, _chwaer_

Sit-ting, _eisteddiad_, _eisteddfod_

Six-fold, _chwethro_, _chwephlyg_

Six-pence, _chwecheiniog_

Six-ty, _triugain_

Skil-ful, _medrus_, _hyfedr_, _celfydd_

Skin-ner, _crwynwr_; _blingwr_

Skip-ping, _llamsachiad_, _neidiad_

Skir-mish, _ysgarmes_: _ymryson_

Sky-lark, _ehedydd_

Sky-light, _nenwawl_

Slan-der, _athrod_, _absen_: _athrodi_, _absenu_

Slaugh-ter, _lladdfa_: _lladd_, _cigyddio_

Slen-der, _main_; _egwan_; _prin_

Slight-ly, _yn ysgafn_, _yn ysgornllyd_

Slop-ing, _lledbeiad_, _llechweddiad_

Sloth-ful, _diog_, _swrth_, _musgrell_

Slov-en, _bawai_, _swgar_, _annhaclus_

Slug-gard, _segurddyn_, _diogyn_

Slum-ber, _hun_, _dargwsg_: _huno_, _hepian_

Small-pox, _y frech wen_

Smel-ling, _arogliad_

Smooth-ly, _yn esmwyth_, _yn rhwydd_

Smoth-er, _tawch_, _mygdarth_: _mygu_; _tagu_

Snaf-fle, _genfa_, _ffroenfa_: _ffrwyno_

Snow-ball, _pelen eira_

Snuff-ers, _salltrin_, _glâniadur_

Soak-ing, _mwyd_, _mwydiad_

Sock-et, _twll_, _mortais_; _crai_

Sod-den, _berw_; _berwedig_

Soft-en, _meddalhau_, _meddalu_

Soft-ness, _meddalwch_, _tynerwch_

So-journ, _ymdaith_; _trigo_, _aros_

Sol-ace, _cysur_: _cysuro_

Sol-ar, _heulfa_

Sol-dier, _milwr_, _sawdiwr_

Sol-emn, _difrifol_; _goruchel_

Sol-id, _cyfangorph_; _sylweddol_; _caled_

Sol-stice, _heulorsaf_

Solv-ent, _trwyth_, _a dawdd_; _abl i dalu_

Some-how, _yn rhw fodd_

Some-thing, _rhywbeth_

Some-what, _rhywbeth_

Some-where, _yn rhywle_

Song-ster, _caneuwr_, _cantwr_

Sooth-say, _dewinio_

Song-stress, _cantores_

Soph-ist, _twyllddadleuwr_

Sor-did, _bawlyd_, _brwnt_; _crintach_

Sor-row, _tristwch_, _gofid_: _tristäu_

Sor-ry, _trist_; _salw_, _gwael_

Sound-ing, _dyfnder_; _seiniad_; _seinfawr_

Sound-ly, _yn ddwys_, _yn dda_

South-ward, _tu a'r dehau_

Sow-ing, _hëad_, _hauad_

Spa-cious, _eang_, _helaeth_

Spare-rib, _asen y fran_, _culasen_

Spar-ing, _prin_, _cynil_

Spar-row, _aderyn_, _y to_

Speak-er, _llafarwr_, _ymadroddwr_

Speak-ing, _llafariad_

Spe-cial, _neillduol_; _arbenigol_

Spe-cies, _arian bathawl_, _bath_; _rhyw_, _rhywogaeth_

Speech-less, _mud_, _dilafar_

Speed-y, _buan_, _cyflym_, _ebrwydd_

Spell-ing, _silliad_, _sillafiad_

Spi-der, _cor_, _pryfcopyn_

Spin-dle, _gwerthyd_; _echel_

Spir-it, _ysbryd_: _calonogi_

Spite-ful, _migus_, _dygas_

Spit-tle, _poer_, _poeryn_

Splen-did, _claer_, _ysblenydd_

Splen-dour, _gwychder_, _ceinedd_

Splint-er, _dyfloen_, _dellten_: _delltenu_

Spon-sor, _mach_, _mechniydd_

Spright-ly, _bywiog_, _gorhoenus_, _siongc_

Sprin-kle, _taenellu_, _ysgeinio_

Sput-ter, _ffwdan_, _godwrdd_: _bwrw poer_

Squad-ron, _llynges_, _byddin_

Squan-der, _gwasgaru_, _gwastraffu_

Squeak-ing, _gwichiad_; _gwichiog_

Squeez-ing, _gwasgiad_

Squir-rel, _gwiwer_, _y wiwer_

Sta-ble, _marchdy_; _diysgog_, _sefydlog_

Stag-ger, _hongcian_; _petruso_

Stag-gers, _dera_, _penddaredd_

Stag-nant, _llonydd_, _marw_

Stag-nate, _croni_, _llynio_

Stam-mer, _attalddywedyd_: _bloesgi_

Stand-ard, _lluman_, _baner_; _prawfreol_; _gosodedig_

Stand-ing, _safiad_, _safle_; _sefydlog_; _parhad_

Sta-ple, _marchnadfa_; _sefydledig_

Star-ing, _hylldremiol_

Star-ling, _drudwy_

Start-ing, _cychwynfa_

State-ly, _uchelwych_, _balch_

States-man, _gwladwr_, _gwladwriaethol_

Stat-ics, _pwysyddiaeth_

Sta-tion, _sefyllfa_, _gorsaf_; _galwad_: _sefydlu_, _gorsafu_

Stat-ue, _delw_, _cerflun_

Stat-ure, _maint_, _uchder_

Stat-ute, _gosodedigaeth_, _deddf_

Stead-fast, _sicr_, _dianwadal_, _diysgog_

Stead-y, _diwamal_, _diysgog_

Stealth-y, _lladradaidd_; _dirgel_

Steep-ing, _mwydiad_; _mwydawl_

Stee-ple, _clochdy_

Steep-ness, _serthedd_, _llethredd_

Steer-age, _llywiad_; _llywle_

Ster-il, _diffrwyth_; _anfuddiol_

Ster-ling, _gwirfath_; _cyfreithlawn_

Stew-ard, _goruchwyliwr_; _dystain_

Stiff-en, _sythgaledu_; _sythu_

Still-born, _marwanedig_

Still-ness, _tawelwch_, _dystawrwydd_

Stin-gy, _crintach_, _anhael_

Stink-ing, _drewllyd_, _drygsawrus_

Sti-pend, _tâl_, _cyflog_

Stir-rup, _gwrthafl_

Stoak-er, _tânborthwr_

Stock-ing, _hosan_

Stom-ach, _cylla_; _chwant bwyd_; _digter_: _digio_, _ffromi_

Stop-page, _arosiad_

Store-house, _ystordy_

Sto-ry, _hanes_; _chwedl_: _rhoi hanes_

Stow-age, _ystôrle_; _ystordai_

Strag-glers, _gwibgrwydiaid_

Straight-en, _unioni_, _uniawni_

Straight-ways, _yn uniongyrchol_

Strait-en, _tynhau_; _cyfyngu_

Stran-ger, _alldud_, _estron_

Stran-gle, _tagu_, _llindagu_

Stra-tum, _haen_; _gwanaf_; _gwely_

Stream-ing, _ffrydiad_; _ffrydiol_

Stream-let, _corffrwd_, _ffrydan_

Strength-en, _nerthu_, _grymuso_

Stretch-er, _ymestynwr_; _tynfaingc_

Strict-ness, _caethder_, _manylrwydd_

Strik-ing, _hynod_, _nodedig_; _od_

Strin-gent, _bolrwymol_, _caethrwym_

Strip-ling, _glaslangc_, _llencyn_

Struc-ture, _adail_, _adeiladaeth_; _ffurf_

Strug-gle, _ymdrech_: _ymryson_

Stub-ble, _soflyn_, _pl._ _sofl_

Stu-dent, _myfyriwr_, _astudiwr_

Stud-y, _myfyriad_; _llyfrgell_: _myfyrio_, _dilyn dysg_

Stum-ble, _tramgwydd_, _trip_: _tramgwyddo_

Stu-pid, _hurt_, _syfrdan_

Stu-por, _hurtrwydd_, _syndod_

Stur-dy, _ystyfnig_, _haerllug_; _cryf_

Stut-ter, _cecian_

Sub-due, _goresgyn_, _darostwng_

Sub-ject, _deiliad_; _pwngc_; _darostynedig_: _darostwng_

Sub-join, _adchwanegu_; _cyssylltu_

Sub-lime, _uchel_, _goruchel_

Sub-mit, _ymostwng_, _ymroddi_

Sub-orn, _dirgel-lithio_, _dirgel-ddysgu_

Sub-scribe, _tanysgrifio_; _cydsynio_

Sub-side, _gwaelodi_; _ymlonyddu_

Sub-sist, _gorsefyll_, _parhau_; _byw_, _bod_

Sub-stance, _sylwedd_, _defnydd_; _swm_, _cyfoeth_, _moddion_

Sub-tend, _tanledu_, _ymestyn dan_

Sub-tile, _manw_; _treiddiol_, _cyfrwys_

Sub-tle, _cyfrwys_, _ystrywgar_

Sub-tract, _tynu ymaith_, _erthynu_

Sub-vert, _dadymchwel_; _gwyrdroi_

Sub-urb, _rhagddinas_, _maerdref_

Suc-ceed, _olynu_, _canlyn_; _llwyddo_

Suc-cess, _llwydd_, _llwyddiant_; _canlyniad_

Suc-cinct, _tacledig_; _cryno_, _byr_

Suc-cour, _porth_, _cymhorth_, _help_: _cynnorthwyo_; _ymgeleddu_

Suc-tion, _sugn_, _sugndyniad_

Sud-den, _disyfyd_, _dirybudd_

Su-et, _gwer_, _brasder caled_

Suf-fer, _goddef_, _dyoddef_; _caniatau_

Suf-fice, _digoni_, _diwallu_, _boddloni_

Suf-frage, _pleidlais_, _llais_

Su-gar, _sugr_, _siwgwr_: _siwgro_

Sug-gest, _arafgrybwyll_, _sibrwd_

Suit-or, _erfyniwr_; _carwr_

Sulk-y, _anfoddog_, _afrywiog_

Sul-len, _sarug_, _cuchiog_

Sul-phur, _brwmstan_, _mygfaen_

Sul-try, _mwrn_; _tesog_

Sum-mer, _haf_; _hafaidd_: _hafota_

Sum-mit, _pen_, _copa_, _crib_; _blaen_

Sum-mon, _gwysio_; _galw_

Sum-mons, _gwys_, _dyfyn_

Sun-beam, _pelydryn_, _mychedyn_

Sun-day, _dydd Sul_

Sun-dry, _amryw_, _amrywiol_

Sun-rise, _codiad haul_

Su-perb, _mawrwych_, _mawreddog_

Sup-per, _swper_: _swperu_

Sup-plant, _dadymchwelyd_, _disodli_

Sup-ple, _ystwyth_: _ystwytho_

Sup-ply, _porth_, _cymhorth_; _adgyflenwad_: _cyflenwi_, _cynnorthwyo_

Sup-port, _atteg_, _cynnaliaeth_: _attegu_, _cynnal_

Sup-pose, _tybio_, _tybied_, _meddylied_

Sup-press, _gwasgu i lawr_, _llethu_; _dirgelu_

Su-preme, _uchaf_, _goruchaf_

Sure-ness, _sicrwydd_; _dïewrwydd_

Sure-ty, _mach_, _mechniydd_

Sur-face, _gwyneb_, _arwyneb_; _clawr_

Sur-feit, _alar_, _gorlwyth_: _alaru_, _gorlwytho_

Sur-geon, _llawfeddyg_

Sur-ly, _surllyd_, _anhynaws_

Sur-mise, _tyb_, _llettyb_: _lleddybio_

Sur-mount, _codi dros_, _gorchfygu_

Sur-name, _cyfenw_: _cyfenwi_

Sur-pass, _rhagori ar_, _uwchlaw_

Sur-plice, _gwenwisg_

Sur-plus, _gwarled_, _gweddill_

Sur-prise, _syndod_, _aruthraw_: _dyrysu_

Sur-round, _cylchynu_, _cwmpasu_

Sur-vey, _golwg_; _mesur_: _arolygu_, _mesur_

Sur-vive, _gorfucheddu_, _oloesi_

Sus-pect, _drwgdyb_: _drwgdybio_

Sus-pend, _crogi wrth_; _oedi_, _gohirio_

Sus-pense, _amheuaeth_, _oediad_

Sus-tain, _cynnal_, _cynnorthwyo_, _porthi_, _helpio_; _goddef_

Swad-dle, _ffunen_, _rhwymyn_: _ffunenu_, _rhwymynu_

Swag-ger, _bolchwyddo_, _gwagfrolio_

Swal-low, _gwenol_; _llyngcle_: _llyngcu_

Swarth-y, _melynddu_, _cibddu_

Swear-ing, _twng_, _tyngiad_; _llw_

Sweep-ings, _ysgubion_

Sweet-ness, _melusder_; _addfwynder_

Swell-ing, _chwyddiad_, _chwydd_

Swift-ness, _buandra_, _cyflymdra_

Swim-mer, _nofiwr_, _nofiedydd_

Swin-dler, _hudleidr_

Swiv-el, _bolldid_; _trorwy_

Sword-fish, _cleddbysg_

Syl-van, _coed-dduw_; _coedaidd_

Symp-tom, _argoel_, _arwydd_

Syn-od, _cymmanfa_; _cydfa_

Syn-tax, _cystrawen_, _cystrawiaeth_

Syr-inge, _chwistrell_: _chwistrellu_

Sys-tem, _egwyddoriaeth_, _cyfundraeth_

Tab-let, _llechen_; _taflen_

Tac-it, _dystaw_, _tawedog_

Tack-ling, _taclau_, _offer_

Tac-tics, _byddindrefniad_, _cadyddiaeth_

Tai-lor, _dilledydd_

Tak-ing, _cymeriad_, _attafaeliad_

Tal-ent, _dawn_, _rhodd_, _galluedd_

Talk-ing, _siarad_, _ymadroddiad_

Tal-low, _gwer_; _gweren_

Tal-on, _ewin_, _crafangc_, _palf_

Tame-ly, _yn ddof_

Tan-ner, _crwyngyffeithydd_

Ta-per, _cwyren_; _brigfain_: _brigfeinhau_

Tar-dy, _diweddar_, _hwyr_; _musgrell_

Tar-get, _tarian_, _bwccled_

Tar-nish, _diwyno_, _anurddo_

Tar-ry, _aros_, _trigo_, _tario_

Tar-iff, _trosglwydd-doll_

Taw-ny, _melynddu_, _dufelyn_

Teach-er, _addysgwr_, _athraw_

Tem-per, _tymher_: _tymheru_

Tem-pest, _corwynt_, _enawel_, _tymhestl_

Tem-ple, _teml_; _arlais_

Tem-ples, _arleisiau_

Tempt-er, _hudwr_, _llithiwr_

Ten-ant, _deiliad_, _daliwr tir_

Ten-der, _cynnygiad_; _tyner_, _tirion_: _cynnyg_

Ten-don, _gïewyn_, _gewyn_

Ten-et, _barn_, _tyb_, _egwyddor_

Ten-or, _tueddiad_, _rhediad_

Ten-ure, _daliad_, _gafael_

Ter-race, _uchelrodfa_, _nenrodfa_

Ter-ror, _dychryn_, _braw_, _arswyd_

Tes-tate, _cymynlythyrog_

Teth-er, _tidraff_: _tidraffu_

Text-ure, _pleth_, _gwëad_; _cyfres_

Thank-ful, _diolchgar_

Thaw-ing, _meirioliad_; _meiriol_

The-ist, _gwrthgredwr_, _anghredwr_

Them-selves, _eu hunain_

Thence-forth, _o'r amser hwnw_

There-at, _yno_, _wrtho_, _wrth hyny_

There-by, _trwyddo_, _wrtho_

There-fore, _am hyny_, _gan hyny_

There-from, _oddi yno_, _oddi yna_, _o hyny_

There-in, _yn hyny_, _yn hyn_, _ynddo_

There-of, _o hono_, _o hyn_, _o hyna_

There-on, _arno_, _arni_, _ar hyny_

There-to, _atto_, _atti_, _at hyny_, _i hyny_, _i hyn_

Thick-et, _tewlwyn_, _prysglwyn_

Thick-ness, _tewder_, _ffurfder_

Thim-ble, _gwnïadur_

Think-ing, _meddyliad_, _myfyriad_; _myfyriol_

Thirst-y, _sychedig_

Thir-ty, _deg a'r hugain_, _trideg_

This-tle, _ysgallen_, _ysgellyn_

Thith-er, _hyd yno_

Thor-ough, _cyflawn_, _hollol_, _perffaith_

Thought-ful, _myfyrgar_, _meddylgar_

Thous-and, _mil_, _deg cant_

Thral-dom, _caethiwed_, _caethwasanaeth_

Thrash-er, _dyrnwr_, _ffustiwr_

Thread-bare, _digottwm_, _llwm_, _llom_

Threat-en, _bygylu_, _dondio_, _dwrdio_, _bygwth_

Three-fold, _tridgblyg_, _triphlyg_

Thresh-old, _trothwy_, _hiniog_

Thriv-ing, _cynnyddol_, _prifiannus_

Thros-tle, _y fronfraith_

Throt-tle, _corn y gwynt_, _llindag_: _llindagu_, _tagu_

Through-out, _trwy_, _trwodd_; _yn gwbl oll_, _yn hollol_

Thun-der, _taran_: _taranu_

Thurs-day, _dyd Iau_

Tick-et, _tocyn_, _arwyddnod_: _tocynu_

Tic-kle, _goglais_; _gogleisiol_; _ansafadwy_: _gogleisio_

Ti-dings, _newyddion_; _hanesion_

Ti-dy, _taclus_, _twt_, _cryno_

Ti-ger, _dywalgi_, _tiger_

Tight-en, _tynhau_; _cyfyngu_

Till-age, _amaethiaeth_, _llafurwaith_

Tim-ber, _defnyddgoed_, _coed_

Time-ly, _amserol_, _prydlawn_; _yn amserol_, _mewyn pryd_

Time-piece, _oriadur_

Tim-id, _ofnus_, _ofnog_, _anëon_

Tinc-ture, _lliw_, _arliw_; _trwyth_

Tin-der, _golosged_, _golosg_

Tink-ling, _tinciad_, _tingciad_

Tip-toe, _blaen y fawd_, _pen y fawd_

Tire-some, _blinderus_, _lluddedus_

Tis-sue, _eurblethwe_; _arianbleth_

Ti-tle, _enw_, _enwad_: _enwi_; _rhoi hawl_