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bod

to be

VerbA1/boːd/

“bod” means “to be” in Welsh (verb). Pronounced /boːd/. Mutation forms: Treiglad Meddal → fod, Treiglad Trwynol → mod.

Mutation forms

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

MutationForm
Base formbod
Treiglad Meddalfod
Treiglad Trwynolmod

When does “bod” mutate?

er— although / since (conjunction, triggers treiglad meddal)

bod→er fod(although (it) is)

tra— while (conjunction, triggers treiglad meddal)

bod→tra fod(while being)

“bod” 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

Mae Tom wedi bod yn tyfu barf trwy'r haf.

Tom has been growing a beard all summer.

B2

Er ei bod hi'n bwrw glaw, mi es i allan.

Although it was raining, I went out.

B2

Mae hi wedi bod yn ddiwrnod da.

It's been a good day.

B1

Mae hi wedi bod yn bwrw glaw yn ddi-stop am dri diwrnod.

It has been raining nonstop for three days.

B2

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

cofio

to remember

cael

to get

gwneud

to do

gweld

to see

meddwl

to think (also: to mean)

gwybod

to know

ystyried

to consider

golygu

to view

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