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. 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