Meaning

adjective characterized by iniquity; wicked because it is believed to be a sin

originFrom Middle English ungodli (“cruelly, maliciously, wickedly; unfairly, unlawfully, wrongly; discourteously, rudely”) [and other forms], from un- (prefix meaning ‘not’), + godli (“excellently; pleasingly, splendidly; courteously, graciously; gladly, willingly; righteously; properly, rightly; at all, possibly; much”). Godli is probably derived from Old English gōdlīċe (“goodly”), from gōd (“good”)…

Etymology from Wiktionary, CC BY-SA 3.0