/ Thesaurus / U Synonyms of unimpressive Find synonyms for: Adjective1. unimpressive (vs. impressive), unimposing, humbleusage: not capable of impressingWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language