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caithfidh

must

Verbdict/ˈkahə/

"caithfidh" means "must" in Irish (verb). Pronounced /ˈkahə/. Mutation forms: Séimhiú → chaithfidh, Urú → gcaithfidh.

Mutation forms

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

MutationForm
Base formcaithfidh
Séimhiúchaithfidh
Urúgcaithfidh

"caithfidh" in context

Caithfidh mé gloiní gréine.

I will wear sunglasses.

A2

Caithfidh mé dul.

I have to go.

A1

Caithfidh mé dul abhaile anois.

I have to go home now.

A1

Caithfidh mé imeacht.

I must leave.

A1

Caithfidh mé an gúna gorm.

I'll wear the blue dress.

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

tosaigh

to begin

críochnaigh

finish

níos

more

lean

to follow

fan

to wait

deir

says

mair

live

cinnte

certain, sure

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