Breadcrumb Home > Thesaurus > O Synonyms of overconfident Find synonyms for: Adjective 1. cocksure, overconfident, positive, confident (vs. diffident) usage: marked by excessive confidence; "an arrogant and cocksure materialist"; "so overconfident and impudent as to speak to the queen"; "the less he knows the more positive he gets" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of overconfident (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: suigeneris Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language