/ Thesaurus / F Synonyms of flush it Find synonyms for: Verb1. fail, flunk, bomb, flush itusage: fail to get a passing grade; "She studied hard but failed nevertheless"; "Did I fail the test?"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language