/ Thesaurus / S Synonyms of sounding board Find synonyms for: Noun1. sounding board, person, individual, someone, somebody, mortal, soulusage: a person whose reactions to something serve as an indication of its acceptability; "I would use newspapermen as a sounding board for such policies"2. sounding board, soundboard, resonator, cavity resonator, resonating chamberusage: (music) resonator consisting of a thin board whose vibrations reinforce the sound of the instrumentWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: languid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language