Réitíonn an aidiacht leis an ainmfhocal de réir tuisil, inscne agus uimhreach. Séimhítear aidiacht a cháilíonn ainmfhocal baininscneach sa tuiseal ainmneach, cuspóireach agus gairmeach uatha.
The adjective agrees with the noun in case, gender and number. An adjective is lenited when it qualifies a feminine noun in the nominative, accusative and vocative cases singular.
| Ainmfhocal firinscneach + aidiacht A masculine noun + an adjective | Ainmfhocal baininscneach + aidiacht A feminine noun + an adjective |
| lá maith (a) good day | oíche mhaith (a) good night |
| cúrsa deacair (a) difficult course | obair dheacair difficult work |
An aidiacht i ndiaidh réamhfhocail shimplí + an t‑alt + ainmfhocal
The adjective after a simple preposition + the definite article + a noun
| Ainmfhocal firinscneach A masculine noun | Ainmfhocal baininscneach A feminine noun |
| ar an lá deireanach on the last day | ar an oíche dheireanach on the last night |
| chuig an bhfear bocht to the poor man | chuig an mbean bhocht to the poor woman |
Nóta
Note
I nGaeilge Uladh, séimhítear aidiacht a leanann ainmfhocal firinscneach a bhfuil réamhfhocal simplí agus an t‑alt ag teacht roimhe.
In Ulster Irish, an adjective is lenited when it follows a masculine noun preceded by a simple preposition and the definite article.
ar an lá dheireanach
on the last day
chuig an fhear bhocht
to the poor man
D, n t, l, s
Nuair a thagann na litreacha d, n, t, l, s le chéile ag deireadh ainmfhocail bhaininscnigh agus ag tús aidiachta, bíonn séimhiú fós i gceist.
When the letters d, n, t, l, s come together at the end of a feminine noun and the beginning of an adjective, lenition still occurs.
bialann Shíneach
(a) Chinese restaurant
bean dheas
(a) nice woman