/ Thesaurus / O Synonyms of own up Find synonyms for: Verb1. make a clean breast of, own up, fess up, concede, profess, confessusage: admit or acknowledge a wrongdoing or error; "the writer of the anonymous letter owned up after they identified his handwriting"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: ontiguous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language