αὐτός (autos): all forms
αὐτός means “self, very; (oblique) him, her, it; the same”. Below is its full declension in Ancient Greek.
Positive
| Masculine | Feminine | Neuter | |
|---|---|---|---|
| Nominative | αὐτός | αὐτή | αὐτό |
| Genitive | αὐτοῦ | αὐτῆς | αὐτοῦ |
| Dative | αὐτῷ | αὐτῇ | αὐτῷ |
| Accusative | αὐτόν | αὐτήν | αὐτό |
| Vocative | αὐτέ | αὐτή | αὐτό |
| Masculine | Feminine | Neuter | |
|---|---|---|---|
| Nominative | αὐτοί | αὐταί | αὐτά |
| Genitive | αὐτῶν | αὐτῶν | αὐτῶν |
| Dative | αὐτοῖς | αὐταῖς | αὐτοῖς |
| Accusative | αὐτούς | αὐτάς | αὐτά |
| Vocative | αὐτοί | αὐταί | αὐτά |
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Liddell-Scott-Jones, A Greek-English Lexicon (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.