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ac

and (before vowels)

ConjunctionA1

"ac" means "and (before vowels)" in Welsh (conjunction). Mutation forms: Treiglad Llaes → hac.

Mutation forms

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

MutationForm
Base formac
Treiglad Llaeshac

"ac" in context

Mae gen i ddau frawd ac un chwaer.

I have two brothers and one sister.

B1

Gall berson dwyieithog newid o un iaith i iaith arall yng nghanol frawddeg, ac mae'r cyfnewid-cod hwn yn bwnc astudio i ieithyddion.

A bilingual person can change from one language to another in the middle of a sentence, and this code-switching is a topic of study for linguists.

B2

Rhaid i ni benderfynu, ac yn fuan!

We have to decide, and soon!

A1

Mae’r Gymraeg yn iaith swyddogol yng Nghymru ac yn Chubut.

Welsh is an official language in Wales and Chubut.

B1

Ac 'nawr?

And now?

A1

Further reading

Welsh Mutations Explained — Soft, Nasal & Aspirate →Welsh Pronunciation — It's Actually Easier Than English →How to Learn Welsh as an Adult — A Step-by-Step Roadmap →Best Apps to Learn Welsh (2026) →Browse all Welsh vocabulary →

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Related Welsh words

a

and (before consonants)

pan

when

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