1. universally, of a bad nature; not such as it ought to be.

2. (morally, i. e.) of a mode of thinking, feeling, acting; base, wrong, wicked: of persons, Matthew 21:41 (cf. Winers Grammar, 637 (592); also Buttmann, 143 (126)); ; Philippians 3:2; Revelation 2:2. διαλογισμοί;, Mark 7:21; ὁμιλίαι, 1 Corinthians 15:33; ἐπιθυμία, Colossians 3:5 (Proverbs 12:12); ἔργα (better ἔργον), Romans 13:3. neuter κακόν, τό κακόν, evil i. e. what is contrary to law, either divine or human, wrong, crime: (John 18:23); Acts 23:9; Romans 7:21; Romans 14:20; Romans 16:19; 1 Corinthians 13:5; Hebrews 5:14; 1 Peter 3:10; 3 John 1:11; plural (evil things): Romans 1:30; 1 Corinthians 10:6; 1 Timothy 6:10 (πάντα τά κακά all kinds of evil); James 1:13 (Winers Grammar, § 30, 4; Buttmann, § 132, 24); κακόν ποιεῖν, to do, commit evil: Matthew 27:23; Mark 15:14; Luke 23:22; 2 Corinthians 13:7; 1 Peter 3:12; τό κακόν, Romans 13:4; τά κακά, ; κακόν, τό κακόν πράσσειν, Romans 7:19; Romans 9:11. (Rec.); ; (2 Corinthians 5:10 R G L Tr marginal reading); τό κακόν κατεργάζεσθαι, Romans 2:9. specifically of wrongs inflicted: Romans 12:21; κακόν ἐργάζομαι τίνι (to work ill to one), Romans 13:10; ἐνδείκνυμι, 2 Timothy 4:14; ποιῶ, Acts 9:13; ἀποδίδωμι κακόν ἀντί κακοῦ, Romans 12:17; 1 Thessalonians 5:15; 1 Peter 3:9.

3. troublesome, injurious, pernicious, destructive, baneful: neuter κακόν, an evil, that which injures, James 3:8 (Winers Grammar, § 59, 8 b.; Buttmann, 79 (69)); with the suggestion of wildness and ferocity, θηρία, Titus 1:12; substantially equivalent to bad, i. e. distressing, whether to mind or to body: ἕλκος κακόν καί πονηρόν (A. V. a noisome and grievous sore), Revelation 16:2; κακόν πράσσω ἐμαυτῷ, Latinvim mihi infero, to do harm to oneself, Acts 16:28; κακόν τί πάσχω, to suffer some harm, Acts 28:5; τά κακά, evil things, the discomforts which plague one, Luke 16:25 (opposed to τά ἀγαθά, the good things, from which pleasure is derived). (Synonym: cf. κακία.)