/ Thesaurus / H Synonyms of hydroxybenzoic acid Find synonyms for: Noun1. hydroxybenzoic acid, hydroxy acidusage: a crystalline derivative of benzoic acidWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language