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Definition 2025

cúis

cúis

See also: cuis and cùis

Irish

Noun

cúis f ‎(genitive singular cúise, nominative plural cúiseanna)

cause, reason, source
(philosophy) cause
(law) case
movement, cause

Declension

Declension of cúis

Second declension

Bare forms

Case	Singular	Plural
Nominative	cúis	cúiseanna
Vocative	a chúis	a chúiseanna
Genitive	cúise	cúiseanna
Dative	cúis	cúiseanna

Forms with the definite article

Case	Singular	Plural
Nominative	an chúis	na cúiseanna
Genitive	na cúise	na gcúiseanna
Dative	leis an gcúis don chúis	leis na cúiseanna

Synonyms

(cause, reason): bunúdar, fáth, údar
(philosophical cause): cúisiú

Mutation

Irish mutation
Radical	Lenition	Eclipsis
cúis	chúis	gcúis
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.