αὐτὸς καθ' αὑτόν

From LSJ

Ἐπιλανθάνονται πάντες οἱ παθόντες εὖ → Cunctis memoria est fluxa, quis factum bene est → Vergesslich alle, denen Gutes widerfährt

Menander, Monostichoi, 170

English

per se, himself

Greek > English (Woodhouse)

per se, singly, by oneself