Extended Strong's Greek Lexicon (Abbott-Smith based)
unrighteousness
Usage: ἀδικία, -ας, ἡ (ἄδικος), [in LXX for עָוֹן, פֶּשַׁע, עָוֶל, etc. ;] __1. injustice: Luk.18:6, Rom.9:14. __2. unrighteousness, iniquity: Jhn.7:18, Act.8:23, Rom.1:18, 29 2:8 6:13, 2Ti.2:19, 1Jn.1:9 5:17; opposite to ἀλήθεια, 1Co.13:6, 2Th.2:12; to δικαιοσύνη ], Rom.3:5; ἀπάτη τῆς ἀ., 2Th.2:10; μισθὸς ἀδικίας, Act.1:18, 2Pe.2:13,15; ἐγράται τῆς ἀ., Luk.13:27; μαμωνᾶς τῆς ἀ., Luk.16:9; κόσμος τῆς ἀ., Jas.3:6; οἰκονόμος τῆς ἀ., Luk.16:8. __3. = ἀδίκημα, an unrighteous act: ironically, a favour, 2Co.12:13;
pl., Heb.8:12 (Cremer, 261; MM, VGT, see word). † (AS)