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a naoi

nine (9)

numeralA1

"a naoi" means "nine (9)" in Irish (numeral). Mutation forms: Urú → n-a naoi, Réamhlitir h → ha naoi, Réamhlitir t → t-a naoi.

Mutation forms

In Irish, the first letter of "a naoi" changes depending on the grammatical context. These are the mutated forms:

MutationForm
Base forma naoi
Urún-a naoi
Réamhlitir hha naoi
Réamhlitir tt-a naoi

"a naoi" in context

Tá sé a naoi a chlog.

It's nine o'clock.

A2

A haon, a dó, a trí, a ceathair, a cúig, a sé, a seacht, a hocht, a naoi, a deich.

One, two, three, four, five, six, seven, eight, nine, ten.

B2

Feicfidh mé thú ag leath i ndiaidh a naoi.

I'll see you at half past nine.

A2

Feicfidh mé thú ag leathuair i ndiaidh a naoi.

I'll see you at half past nine.

B1

Feicfidh mé thú ag leathuair tar éis a naoi.

I'll see you at half past nine.

B1

Further reading

Irish Mutations: Complete Guide to Séimhiú and Urú →Irish Pronunciation, The System Behind the Spelling →How to Learn Irish as an Adult, A Step-by-Step Roadmap →Best Irish Learning App 2026 →Browse all Irish vocabulary →

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Related Irish words

a haon

one (1)

a dó

two (2)

a trí

three (3)

a ceathair

four (4)

a cúig

five (5)

a sé

six (6)

a seacht

seven (7)

a hocht

eight (8)

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