/ Thesaurus / S Synonyms of sulfanilic acid Find synonyms for: Noun1. sulfanilic acid, sulphanilic acid, acidusage: a crystalline acid made from aniline and used as a dyeWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: effervescent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language