Breadcrumb Home > Thesaurus > N Synonyms of noxious Find synonyms for: Adjective 1. noxious (vs. innocuous), baneful, deadly, pernicious, pestilent, corrupting, degrading, vesicatory, vesicant, harmful, toxic, unwholesome usage: injurious to physical or mental health; "noxious chemical wastes"; "noxious ideas" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of noxious (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: antiphon Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language