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bliain

year

NounFeminineA1/bʲlʲiənʲ/

"bliain" means "year" in Irish (feminine noun). Pronounced /bʲlʲiənʲ/. Mutation forms: Séimhiú → bhliain, Urú → mbliain.

Mutation forms

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

MutationForm
Base formbliain
Séimhiúbhliain
Urúmbliain

When does "bliain" mutate?

sé— six (triggers séimhiú)

bliain→sé bhliain(six years)

(teens number)— numbers 11-19 with 'déag' (lenition on initial noun)

bliain→dhá bhliain déag(twelve years)

(twenties number)— numbers 20+ with fichead (no mutation on following noun)

bliain→tríocha bliain(thirty years)

"bliain" in context

Gearrtar siar níos mó gach bliain.

They cut back more every year.

A2

D’imigh sí go Sasana bliain ó shin.

She went to England a year ago.

B1

Bliain Úr Faoi Mhaise Duit!

Happy New Year!

A2

Sílim gur bliain mhaith a bheidh ann.

I think that it's going to be a good year.

B1

Bhí an fhadhb ag fás ó bhliain go bliain.

The problem was growing from year to year.

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

Dé Luain

Monday

Dé Máirt

Tuesday

Dé Céadaoin

Wednesday

Déardaoin

Thursday

Dé hAoine

Friday

Dé Sathairn

Saturday

Dé Domhnaigh

Sunday

uair

hour

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