/ Thesaurus / O Synonyms of overenthusiastic Find synonyms for: Adjective1. overenthusiastic, enthusiastic (vs. unenthusiastic)usage: unduly enthusiasticWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: devout Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language