Breadcrumb Home > Thesaurus > H Synonyms of hazardous Find synonyms for: Adjective 1. hazardous, risky, wild, dangerous (vs. safe), unsafe usage: involving risk or danger; "skydiving is a hazardous sport"; "extremely risky going out in the tide and fog"; "a wild financial scheme" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of hazardous (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: viscous Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language