ἀκραγής
From LSJ
Τὸ νικᾶν αὐτὸν αὑτὸν πασῶν νικῶν πρώτη τε καὶ ἀρίστη. Τὸ δὲ ἡττᾶσθαι αὐτὸν ὑφ' ἑαυτοῦ πάντων αἴσχιστόν τε ἅμα καὶ κάκιστον. → Τo conquer yourself is the first and best victory of all, while to be conquered by yourself is of all the most shameful as well as evil
English (LSJ)
ές, (κράζω)
A not barking, ἀκραγεῖς κύνες, of gryphons, A. Pr.803. Hsch. expl. ἀκραγές by δυσχερές, σκληρόν, ὀξύχολον, cf. ἄκραγγες (leg. ἀκραγές) · ἀκρόχολον AB369.