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byd

world

NounMasculine (gwrywaidd)A1/bɨːd/

“byd” means “world” in Welsh (masculine noun). Pronounced /bɨːd/. Mutation forms: Treiglad Meddal → fyd, Treiglad Trwynol → myd.

Mutation forms

In Welsh, the first letter of “byd” changes depending on the grammatical context. These are the mutated forms:

MutationForm
Base formbyd
Treiglad Meddalfyd
Treiglad Trwynolmyd

“byd” in context

Dw i'n casáu'r byd oherwydd bod y byd yn fy nghasáu innau.

I hate the world because the world hates me.

B1

Ar hyn o bryd, Burj Khalifa yw'r nendwr uchaf yn y byd.

Burj Khalifa is currently the tallest skyscraper in the world.

B1

Mae hi'n honni bod hi'n gwybod dim byd amdano fe, ond dw i ddim yn ei chredu hi.

She claims that she knows nothing about him, but I don't believe her.

B1

Mae hi'n honni bod hi'n gwybod dim byd amdano fe.

She claims that she knows nothing about him.

A2

Does gennym ni ddim byd i'w trafod.

We have nothing to discuss.

B1

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

yw

is (3sg present of bod); also: yew tree

awyr

air

maen

stone

maes

field

mwyn

ore

môr

sea

afon

river

parc

park

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