/ Thesaurus / D Synonyms of dunce cap Find synonyms for: Noun1. dunce cap, dunce's cap, fool's cap, hat, chapeau, lidusage: a cone-shaped paper hat formerly placed on the head of slow or lazy pupilsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language