κᾰκουργ-έω · kakourg-eō — LSJ
do evil, work wickedness, E. Or. 823 (lyr.), etc.; κ. τι Antipho 2.3.2; μηδὲν κ. Pl. Prt. 326a; περί τινας Id. R. 416d; ἵππος ἢν κακουργῇ be vicious, X. Oec. 3.11; ἀδικεῖν καὶ κ. Ar. Nu. 1175; κ. καὶ ἐξαμαρτάνειν Pl. Hp.Mi. 375d:—Pass., εὗρέν τι -ηθέν found that a fraud had been committed, POxy. 1468.19 (iii A.D.).
of discussion, κ. ἐν τοῖς λόγοις use captious or unfair arguments, Pl. Grg. 489b, cf. 483a, Arist. Rh. 1404b39.
of things, ὁ . . ἱδρὼς κακουργεῖ X. Mem. 1.4.6.
c. acc. pers., maltreat, injure, A. Fr. 266, E. Supp. 537; κ. ἀλλήλους καὶ ἀδικεῖν Pl. Lg. 679e.
c. acc. rei, ravage a country, τὴν Εὔβοιαν Th. 2.32, cf. 3.1; κ. τὴν χώραν καὶ τὰ κτήματα Pl. Lg. 760e, etc.; κ. τὸν λόγον spoil the argument, Id. R. 338d.
corrupt, falsify, τοὺς νόμους D. 24.65:—Pass., τὰ ἀληθῆ καὶ μὴ κακουργούμενα τῶν πραγμάτων Id. 31.8.
c. dat., κ. τοῖς προβάτοις, of dogs, Pl. R. 416a.