Meaning
"impiety, ungodliness," is used of (a) general impiety, Rom 1:18, Rom 11:26, 2Ti 2:16, Tit 2:12; (b) "ungodly" deeds, Jud 1:15, RV, "works of ungodliness;" (c) of lusts or desires after evil things, Jud 1:18. It is the opposite of eusebeia, "godliness."
Note: Anomia is disregard for, or defiance of, God's laws; asebeia is the same attitude towards God's Person.
"impious, ungodly" (akin to A), "without reverence for God," not merely irreligious, but acting in contravention of God's demands, Rom 4:5, Rom 5:6, 1Ti 1:9, 1Pe 4:18, 2Pe 2:5 (2Pe 2:6 in some mss.); 2Pe 3:7, Jud 1:4, Jud 1:15 (twice).
akin to A and B, signifies (a) "to be or live ungodly," 2Pe 2:6; (b) "to commit ungodly deeds," Jud 1:15.