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achos

because

ConjunctionA1

"achos" means "because" in Welsh (conjunction). Mutation forms: Treiglad Llaes → hachos.

Mutation forms

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

MutationForm
Base formachos
Treiglad Llaeshachos

"achos" in context

Rydyn ni'n gweld plant gydag ymddygiad heriol achos bod ganddyn nhw anawsterau dysgu yn fwy tebygol o gael eu gwahardd.

We see that children with bad behaviour due to their learning difficulties are more likely to get excluded.

C1

Dim ond yn ddiweddar, mi welsom ni achos llys lle bu rhywun yn euog am fygwth arweinydd cyngor a chynghorydd yn fy rhanbarth i.

Only recently, there was a court case where someone was convicted of threatening a council leader and a councillor in my region.

B2

Sefydlwyd mesurau lliniaru gyda'r ecolegydd i fwrw ymlaen â'r gwaith archwilio safle, a gallaf gadarnhau bod achos busnes amlinellol wedi'i dderbyn a'i gymeradwyo a disgwylir adolygiad o'r achos busnes llawn.

Mitigation measures were established with the ecologist to progress the site investigation works, and I can confirm that an outline business case has been received and approved and a full business case is awaited for review.

C1

Hwn, yn fwy nag unrhyw fater arall, yw'r achos amlycaf lle mae angen dysgu gwersi, a hynny ar frys, oherwydd mae'n debygol y byddwn ni, fel cymdeithas, yn wynebu heriau tebyg iawn rywbryd eto yn y dyfodol.

This, more than any other issue, is the most prominent case where we need to learn lessons as a matter of urgency, because it’s likely that we, as a society, will face very similar challenges at some point in our future.

C1

Mae angen i'r byd ffermio wneud ei achos nawr o fewn cyllideb Cymru, ochr yn ochr ag iechyd ac addysg.

Farming now needs to make its case within the Welsh budget, alongside health and education.

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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