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athro

teacher

NounMasculine (gwrywaidd)B1/ˈaθrɔ/

"athro" means "teacher" in Welsh (masculine noun). Pronounced /ˈaθrɔ/. Mutation forms: Treiglad Llaes → hathro.

Mutation forms

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

MutationForm
Base formathro
Treiglad Llaeshathro

When does "athro" mutate?

ein— our (triggers h-prothesis before vowels only)

athro→ein hathro(our teacher)

"athro" in context

Mae'r athro newydd yn y dosbarth.

The new teacher is in the classroom.

A2

Mae'r myfyrwyr yn gwirioni at yr athro Saesneg newydd.

The students adore the new English teacher.

B1

Athro di-waith dw i.

I am an unemployed teacher.

A1

Athro dw i.

I am a teacher.

A1

Rhaid i mi fenthyg pren mesur gan yr athro.

I have to borrow a ruler from the teacher.

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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