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cath

cat

NounFeminine (benywaidd)C1/kaːθ/

"cath" means "cat" in Welsh (feminine noun). Pronounced /kaːθ/. Mutation forms: Treiglad Meddal → gath, Treiglad Trwynol → nghath, Treiglad Llaes → chath.

Mutation forms

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

MutationForm
Base formcath
Treiglad Meddalgath
Treiglad Trwynolnghath
Treiglad Llaeschath

When does "cath" mutate?

y/yr/’r— the (with feminine singular noun, triggers treiglad meddal)

cath→y gath(the cat)

tri— three (triggers treiglad llaes)

cath→tri chath(three cats)

dau/dwy— two (triggers treiglad meddal on feminine noun)

cath→dwy gath(two cats (feminine))

chwe— six (triggers treiglad llaes)

cath→chwe chath(six cats)

un— one (feminine, triggers treiglad meddal)

cath→un gath(one cat)

prif/hoff/gwir/unig/cas/pur— pre-nominal adjective before a noun (triggers treiglad meddal)

cath→hoff gath(favourite cat)

"cath" in context

Mae cath wen 'da fi.

I have a white cat.

A2

Does dim cath gyda fi.

I don't have a cat.

A2

Cath ydy honno?

Is that a cat?

B1

Cath ydw i.

I'm a cat.

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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