Breadcrumb Home > Thesaurus > N Synonyms of nonfeasance Find synonyms for: Noun 1. nonfeasance, dereliction usage: a failure to act when under an obligation to do so; a refusal (without sufficient excuse) to do that which it is your legal duty to do WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of nonfeasance (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language