Breadcrumb Home > Thesaurus > W Synonyms of weapon Find synonyms for: Noun1. weapon, arm, weapon system, instrumentusage: any instrument or instrumentality used in fighting or hunting; "he was licensed to carry a weapon"2. weapon, artillery, persuasion, suasionusage: a means of persuading or arguing; "he used all his conversational weapons"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of weapon (Dictionary) ✖ Related Content Daily Word Quiz: legerdemain Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language