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 | |