/ Thesaurus / F Synonyms of flavonoid Find synonyms for: Noun1. flavonoid, phytochemical, pigmentusage: any of a large class of plant pigments having a chemical structure based on or similar to flavoneWordNet 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