| Cymraeg | Kernewek | Gaeilge | English |
|---|---|---|---|
| Abladol | Ablasek | Ochslaíoch | Ablative |
| Haniaethol | Abstract | ||
| Gwrthrychol | Dryghek | Áinsíoch | Accusative |
| Gweithredol | Gweythresek | Gníomhach | Active |
| Ansoddair | Hanow gwann | Aidiacht | Adjective |
| Adferf | Asverb | Dobhriathar | Adverb |
| Cadarnhaol | Poesedhek | Affirmative, positive | |
| Cyflythrennu | Alliteration | ||
| Gwyddor | Lytherennek | Aibitír | Alphabet |
| Ateb | Freagra | Answer | |
| Ateb | Freagair | To answer | |
| Collnod | Kollverk | Uaschamóg | Apostrophe |
| Bannod | Erthyglenn | Alt | Article |
| Gofyn | To ask | ||
| Cynorthwyol | Auxillary | ||
| Cromfach | Krommvagh | Lúibhín | Bracket |
| Llydan | Ledan | Leathan | Broad |
| Cyflwr | Tuiseal | Case | |
| Cytgan | Chorus | ||
| Cymal | Rannlavar | Clause | |
| Coma | Komma | Camóg | Comma |
| Cymharol | Comparative | ||
| Ffurf gryno | Concise form | ||
| Amod | Condition | ||
| Amodol | Ambosek | Conditional | |
| Rhedeg | Displetya | To conjugate | |
| Rhediad | Displetans | Conjugation | |
| Cytsain | Kessonnenn | Consonant | |
| Derbyniol | Donesek | Tabharthach | Dative |
| Rhediad | Kesyewans | Declension | |
| Rhedeg | Kesyewa | To decline | |
| Penodol | Stroeth | Definite | |
| Tafodiath | Rannyeth | Dialect | |
| Uniongychol | Ewn | Direct | |
| Cyfartal | Equative | ||
| Ebychnod | Merk garm | Comhartha uaillbhreasa | Exclamation mark |
| Benywaidd | Baininscneach | Feminine | |
| Atalnod llawn | Hedh | Lánstad | Full stop |
| Dyfodol | Devedhek, a dheu | Fáistineach | Future |
| Cenedl | Reydh | Inscne | Gender |
| Genidol | Pewek | Ginideach | Genitive |
| Gramadeg | Gramasek, gramer | Gramadach | Grammar |
| Anadliad caled | H-prothesis | ||
| Cysylltnod | Strik | Fleiscín | Hyphen |
| Gorchmynnol | Gorhemmynek | Ordaitheach | Imperative |
| Amherffaith | Anperfydh | Gnáthchaite, neamhfhoirfe | Imperfect |
| Amhersonnol | Impersonal | ||
| Amhenodol | Anstroeth | Indefinite | |
| Mynegol | Táscach | Indicative | |
| Anuniongyrchol | Indirect | ||
| Mewnol | Infixed | ||
| Gofynnol | Ceisteach | Interrogative | |
| Iaith | Yeth, taves | Teanga | Language |
| Llythyren | Lytherenn | Letter | |
| Ieithyddiaeth | Yethonieth | Teangeolaíocht | Linguistics |
| Lythyren fach | Lower case letter | ||
| Gwrywaidd | Gorow | Firinscneach | Masculine |
| Golygu | Styrya | To mean | |
| Ystyr | Styr | Meaning | |
| Modd | Modh | Modh | Mood |
| Treiglad | Treylyans, kemm | Athrú | Mutation |
| Negyddol | Negedhek | Negative | |
| Enwol | Hanwek | Nominative | |
| Enw2 | Hanow | Ainmfhocal, ainm | Noun |
| Cymal enwol | Noun clause | ||
| Gwrthrych | Drygh | Object | |
| Rhangymeriad | Ranngemeryans | Rangabháil | Participle |
| Geiryn | Particle | ||
| Goddefol | Godhevek | Céasta | Passive |
| Gorffennol | Caite | Past, preterite | |
| Perffaith | Perfydh | Foirfe | Perfect |
| Ffurf gwmpasog | Periphrastic form | ||
| Ymadrodd | Lavarenn | Phrase | |
| Gorberffaith | Gorberfydh | Ollfhoirfe | Pluperfect |
| Lluosog | Liesplek | Plural | |
| Rhagddodiad | Ragelvenn | Prefix | |
| Arddodiad | Aragenn | Réamhfhocal | Preposition |
| Presennol | A-lemmyn | Láithreach | Present |
| Rhagenw | Raghanow | Forainm | Pronoun |
| Atalnodi | Poyntya | Poncaigh | To punctuate |
| Atalnodiad | Poyntyans | Poncaíocht | Punctuation |
| Cwestiwn | Govynn | Ceist | Question |
| Gofynnod | Merk govynn | Comhartha ceiste | Question mark |
| Merk devynn, nos devynn | Quotation mark | ||
| Cywair | Register | ||
| Rhethregl | Rhetorical | ||
| Brawddeg | Lavar | Abairt | Sentence |
| Unigol | Singular | ||
| Bratiaith | Slang | ||
| Cul | Kul | Caol | Slender |
| Sillafu | Lytherenna | To spell | |
| Goddrych | Subject, hanow | Subject | |
| Dibynnol | Islavarek | Foshuiteach | Subjunctive |
| Isgymal | Subordinate clause | ||
| Terfyniad | Lostelvenn | Suffix | |
| Eithaf | Superlative | ||
| Sillaf | Syllabenn | Syllable | |
| Cyfystyr | Synonym | ||
| Cyfystyr | Synonymous | ||
| Amser | Amser | Aimsir | Tense |
| Digendl | Ungendered, neuter | ||
| Afreal | Unreal | ||
| Priflythyren | Lytherenn vras | Upper case letter | |
| Berf | Verb | Briathar | Verb |
| Pennill | Verse, stanza | ||
| Cyfarchol | Galwek | Gairmeach | Vocative |
| Llais | Faí | Voice, diathesis | |
| Llafariad | Vowel | ||
| Gair | Ger | Focal | Word |