ἔνδηλος
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)
ον,
A visible, manifest, clear, ἔνδηλα καὶ σαφῆ λέγειν S.Ant. 405; ἔ. τι ποιεῖν Th.4.132. 2 manifest, discovered, known, mostly of persons, Ar.Eq.1277, Th.6.36; τινί Id.4.41: with a part., ἔνδηλοι ἔστε . . βαρυνόμενοι Id.2.64, cf. Pl.Phd.88e, Tht.174d, D.21.198; of things, τί τὸ ὑποκείμενον, οὐκ ἔστιν ἔνδηλον Arist.de An.422b34. II Adv. -λως: Sup. -ότατα, προλέγειν Th.1.139.