/ Thesaurus / S Synonyms of speaking trumpet Find synonyms for: Noun1. speaking trumpet, acoustic deviceusage: a trumpet-shaped acoustic device to intensify and direct the human voice; formerly held to the ear by a hard-of-hearing personWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: illegible Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language