Declension of героин

герои́н

heroin (powerful and addictive drug)

Noun | masculine | inanimate

Nominative singularгерои́н
Genitive singularгерои́на
Dative singularгерои́ну
Accusative singularгерои́н
Instrumental singularгерои́ном
Prepositional singularгерои́не

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