/ Thesaurus / H Synonyms of hazmat Find synonyms for: Noun1. HAZMAT, material, stuffusage: an abbreviation for `hazardous material' used on warning signs; "NO HAZMATS IN TUNNEL"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language