Déantar an t‑ainmfhocal atá á cháiliú ag céad a infhilleadh sa tuiseal ginideach uatha.
The noun which is being qualified by céad is inflected in the genitive case singular.
| Céad roimh ainmfhocal firinscneach Céad before masculine nouns | Céad roimh ainmfhocal baininscneach Céad before feminine nouns |
| deireadh an chéad chogaidh end of the first war | ag tús na chéad bhliana at the start of the first year |
| obair an chéad lae the first day’s work | brí na chéad abairte the meaning of the first sentence |
Séimhítear na consain b, c, f, g, m, p tar éis céad. Ní shéimhítear d, s, t.
The consonants b, c, f, g, m, p are lenited when they follow céad. d, s, t are not lenited.
| deireadh an chéad chaidrimh the end of the first relationship | teachtaí na chéad pharlaiminte the representatives of the first parliament |
| ainm an chéad fhir the first man’s name | óráid na chéad mhná the first woman’s speech |
ach but
| teaghlach an chéad sagairt the first priest’s family | coinníollacha na chéad tairisceana the conditions of first offer |
Na horduimhreacha eile
The other ordinal numbers
Ní athraítear ainmfhocail sa ghinideach tar éis na n‑orduimhreacha eile.
Nouns in the genitive case are not changed when they follow the other ordinal numbers.
| cuid cainte an dara bean the second woman’s speech | deireadh an seachtú haois déag the end of the seventeenth century |
| saoránaigh an tríú tír citizens of the third country | tosach an ochtú lá beginning of the eighth day |
| tar éis an cheathrú babhta after the fourth round | imeachtaí an naoú féile events of the ninth festival |
| mic léinn an chúigiú cúrsa students of the fifth course | freagra an deichiú ceist answer of the tenth question |
| cailíní an séú bliain the sixth year girls | |