/ Thesaurus / U Synonyms of unrighteousness Find synonyms for: Noun1. unrighteousness, immoralityusage: failure to adhere to moral principles; "forgave us our sins and cleansed us of all unrighteousness"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: grimace Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language