Breadcrumb Home > Thesaurus > M Synonyms of mutagen Find synonyms for: Noun 1. mutagen, agent usage: any agent (physical or environmental) that can induce a genetic mutation or can increase the rate of mutation WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of mutagen (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: tintinnabulation Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language