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Definition 2025

bean_sí

bean sí

Irish

Alternative forms

bean sídhe (obsolete)

Noun

bean sí f ‎(genitive singular mná sí, nominative plural mná sí)

banshee, fairy woman

Declension

Declension of bean sí

Irregular

Bare forms

Case	Singular	Plural
Nominative	bean sí	mná sí
Vocative	a bhean sí	a mhná sí
Genitive	mná sí	ban sí
Dative	bean sí mnaoi shí (archaic or dialectal)	mná sí mnáibh sí (archaic)

Forms with the definite article

Case	Singular	Plural
Nominative	an bhean sí	na mná sí
Genitive	na mná sí	na mban sí
Dative	leis an mbean sí; don bhean sí leis an mnaoi shí; don mhnaoi shí (archaic or dialectal)	leis na mná sí leis na mnáibh sí (archaic)

Related terms

sióg ‎(“fairy”)

Mutation

Irish mutation
Radical	Lenition	Eclipsis
bean sí	bhean sí	mbean sí
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.