ἄδῐκος · adikos — LSJ
wrongdoing, unrighteous, unjust: ἄνθρωποι Hes. Op. 260: Comp. -ώτερος ib. 272; δίκαν ἐξ ἀδίκων ἀπαιτῶ A. Ch. 398 (lyr.): Sup. -ώτατος S. Tr. 1011 (lyr.): ἄ. εἴς τι unjust in a thing, ἔς τινα towards a person, Hdt. 2.119; εἰς χρήματα X. Cyr. 8.8.6; περί τιναib. 27; ἄ. [ἐν τῷ ἀστραγαλίζειν] one who plays unfairly, Pl. Alc. 1.110b: c. inf., so unjust as to . . , Ep.Hebr. 6.10.
ἄ. ἵπποι obstinate, unmanageable, X. Cyr. 2.2.26; ἄ. γνάθος the hard mouth of a horse, Id. Eq. 3.5.
of things, unjust, unrighteous, ἔργα Hes. Op. 334, Hdt. 1.5; ἕργματα Thgn. 380, Sol. 13.12; ἄδικα φρονέειν Thgn. 395; ἄ. λόγος freq. in Ar. Nu.; ἄρχειν χειρῶν ἀ. begin an assault, Antipho 4.2.1, Lys. 4.11, cf. X. Cyr. 1.5.13, D. 47.39; τὸ δίκαιον καὶ τὸ ἄ., τὰ δίκαια καὶ τὰ ἄ. right and wrong, Pl. Grg. 460a, etc.; πλοῦτος ἄ. ill-gotten, unrighteous, Isoc. 1.38; ζυγὸν ἄ. LXX Am. 8.5; νομὴ ἄ. οὐδὲν ἰσχύει PTeb. 286.7 (ii A.D.); ἡ ἄ. . . συναγωγὴ ἀνδρὸς καὶ γυναικός the unrighteous union, Pl. Tht.
of the punishment of wrongdoing, Ζεὺς νέμων ἄδικα κακοῖς A. Supp. 404 (lyr.), cf. E. Or. 647.
ἄ. ἡμέρα, i.e. ἄνευ δικῶν, a day on which the courts were shut, Luc. Lex. 9: δίκαιος ἄ. who has not appeared in court, Archipp. 46.
Adv. -κως Sol. 13.7, A. Ag. 1546; τοὺς ἀ. θνῄσκοντας S. El. 113 (anap.); εἴτε ὦν δὴ δικαίως εἴτε ἀ. jure an injuria, Hdt. 6.137; δικαίως καὶ ἀ. Pl. Lg. 743b; οὐκ ἀ. not without reason, h.Merc. 316, Simon. 89.3, Pl. Phd. 72a.