/ Thesaurus / B Synonyms of bumptiously Find synonyms for: Adverb1. bumptiouslyusage: in a bumptious manner; "he behaved rather bumptiously and offended the hostess"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: supine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language