αγήρως

From LSJ

ταῦτα δηλώσω αὐτός τε νοσήσας καὶ αὐτὸς ἰδὼν ἄλλους πάσχοντας → I shall describe those symptoms, since I myself had the disease and witnessed as well what others were suffering

Source

Greek Monolingual

ἀγήρως, -ων (Α) γῆρας
αυτός που δεν γερνά, αγέραστος, άφθαρτος, αιώνιος, αθάνατος.