Breadcrumb Home > Thesaurus > M Synonyms of mind boggling Find synonyms for: Adjective1. mind-boggling, impressive (vs. unimpressive)usage: intellectually or emotionally overwhelming; "a mind-boggling display"; "a mind-boggling puzzle"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. ✖ Related Content Daily Word Quiz: donnybrook Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language