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beth

what

PronounA1

"beth" means "what" in Welsh (pronoun). Mutation forms: Treiglad Meddal → feth, Treiglad Trwynol → meth.

Mutation forms

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

MutationForm
Base formbeth
Treiglad Meddalfeth
Treiglad Trwynolmeth

"beth" in context

Beth sydd fel arfer yn achosi'r boen?

What usually causes the pain?

B1

"Beth yw enw dy wraig?" "Dydw i ddim yn briod."

"What's your wife's name?" "I'm not married."

A2

Gwna beth sy'n iawn.

Do what is right.

A2

Tybed beth ddigwyddodd iddo?

I wonder what happened to him.

A2

Tybed beth ddigwyddodd?

I wonder what happened.

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

fi

I/me

ti

you (singular)

fe

he/him

hi

she/her

ni

we/us

chi

you (plural/formal)

nhw

they/them

fy

my

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