αὐτὸς καθ' αὑτόν

From LSJ

Ὡς τῶν ἐχόντων πάντες ἄνθρωποι φίλοι → Opulento amicos, quos volunt, omnes habent → Wie sehr sind doch den Reichen alle Menschen Freund

Menander, Monostichoi, 558

English

per se, himself

Greek > English (Woodhouse)

per se, singly, by oneself