/ Thesaurus / V Synonyms of voice box Find synonyms for: Noun1. larynx, voice box, cartilaginous structure, speech organ, vocal organ, organ of speechusage: a cartilaginous structure at the top of the trachea; contains elastic vocal cords that are the source of the vocal tone in speechWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language