/ Thesaurus / C Synonyms of carboxylic acid Find synonyms for: Noun1. carboxylic acid, acidusage: an organic acid characterized by one or more carboxyl groupsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: candid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language