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cum

to form

VerbA2/kuːmˠ/

"cum" means "to form" in Irish (verb). Pronounced /kuːmˠ/. Mutation forms: Séimhiú → chum, Urú → gcum.

Mutation forms

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

MutationForm
Base formcum
Séimhiúchum
Urúgcum

Further reading

Irish Mutations: Complete Guide to Séimhiú and Urú →Irish Pronunciation, The System Behind the Spelling →How to Learn Irish as an Adult, A Step-by-Step Roadmap →Best Irish Learning App 2026 →Browse all Irish vocabulary →

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