יוונית קלאסית/תורת הצורות/שם עצם/ἥρως

Third declension of ἥρως, ἥρωος

Case / #	Singular	Dual	Plural
Nominative	ἥρως	ἥρωε	ἥρωες
Vocative	ἥρως	ἥρωε	ἥρωες
Accusative	ἥρωα	ἥρωε	ἥρωας
Genitive	ἥρωος	ἡρώοιν	ἡρώων
Dative	ἥρωι	ἡρώοιν	ἥρωσι

Because the root of ἥρως ends with a vowel instead of a consonant, shortenings are common, such as ἥρως for the genitive singular and ἥρῳ for the dative singular.