/ Thesaurus / C Synonyms of clean bill of health Find synonyms for: Noun1. clean bill of health, assuranceusage: an assurance that someone is healthy or something is in good condition; "the doctor gave him a clean bill of health"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: kiln Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language