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athair

sire

NounMasculineA1/ˈɑhəɾʲ/

"athair" means "sire" in Irish (masculine noun). Pronounced /ˈɑhəɾʲ/. Mutation forms: Urú → n-athair, Réamhlitir h → hathair, Réamhlitir t → t-athair.

Mutation forms

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

MutationForm
Base formathair
Urún-athair
Réamhlitir hhathair
Réamhlitir tt-athair

When does "athair" mutate?

a— her (triggers h-prefixing before vowels)

athair→a hathair(her father)

"athair" in context

Tá feirm mhór ag mo mháthair agus m'athair ann.

My father and mother have a big farm there.

B1

Tá faitíos air roimh a athair.

He is afraid of his father.

A1

Tá cónaí orm sa teach a thóg m’athair.

I live in the house my father built.

B1

An bhfaca tú m'athair?

Did you see my father?

A2

Tá m'athair ag dul go dtí an tSín.

My father is going to China.

A2

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

aintín

aunt

neacht

niece

seanathair

grandfather

seanmháthair

grandmother

nia

nephew

cuid

part

fear

man

mac

son

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