ἐφήβειος
From LSJ
αἰὲν ἀριστεύειν καὶ ὑπείροχον ἔμμεναι ἄλλων → always strive for excellence and prevail over others (Iliad 6.208, 11.784)
English (LSJ)
α, ον,
A youthful, ἁλικία AP7.427.12 (Antip. Sid.); ἀκμαί Epigr.Gr.231 (Cnios).
German (Pape)
[Seite 1116] = ἐφήβαιος, ἐφηβείαις ἀκμαῖς Ep. ad. 734 (App. 148, nach Dorville's Conj. ἐφηβείας).