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