/ Thesaurus / C Synonyms of campaign hat Find synonyms for: Noun1. campaign hat, hat, chapeau, lidusage: a broad-brimmed felt hat with a high crown; formerly worn by the United States Army and Marine personnelWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: candid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language