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adeilad

building

NounMasculine (gwrywaidd)A1/aˈdei̯lad/

"adeilad" means "building" in Welsh (masculine noun). Pronounced /aˈdei̯lad/. Mutation forms: Treiglad Llaes → hadeilad.

Mutation forms

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

MutationForm
Base formadeilad
Treiglad Llaeshadeilad

"adeilad" in context

Caewch y drysau wrth adael yr adeilad trwy’r allanfa agosaf.

Leave the building by the nearest exit, closing doors behind you.

B2

Pa mor effeithlon y mae’r adeilad hwn yn cael ei ddefnyddio?

How efficiently is this building being used?

A2

Yma nodir faint o garbon deuocsid y mae’r adeilad yn ei allyrru.

This tells you how much carbon dioxide the building emits.

B1

Yma nodir pa mor effeithlon y mae ynni wedi cael ei ddefnyddio yn yr adeilad hwn dros y tri chyfnod cyfrifo diwethaf.

This tells you how efficiently energy has been used in this building over the last three accounting periods.

C1

Yma nodir gwybodaeth dechnegol am y modd y mae ynni yn cael ei ddefnyddio yn yr adeilad hwn.

This tells you technical information about how energy is used in this building.

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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