Breadcrumb Home > Thesaurus > I Synonyms of illegalize Find synonyms for: Verb 1. outlaw, criminalize, criminalise, illegalize, illegalise, forbid, prohibit, interdict, proscribe, veto, disallow, nix usage: declare illegal; outlaw; "Marijuana is criminalized in the U.S." WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of illegalize (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: antecedent Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language