from kakos, "evil, to treat badly, to hurt," also means "to make evil affected, to embitter," Act 14:2. See EVIL, HARM, HURT.
Note: Zeloo, akin to zeo, "to boil" (Eng., "zeal"), means (a) "to be jealous," Act 7:9, Act 17:5; "to envy," 1Co 13:4; "to covet," Jam 4:2; in a good sense ("jealous over"), in 2Co 11:2; (b) "to desire earnestly," 1Co 12:31, 1Co 14:1, 1Co 14:39; "to take a warm interest in, to seek zealously," Gal 1:4-18, AV, "zealously affect," "to be zealously affected." The RV corrects this to "zealously seek," etc. See COVET, DESIRE, ENVY, JEALOUS, ZEALOUS.