/ Thesaurus / S Synonyms of speech sound Find synonyms for: Noun1. phone, speech sound, sound, language unit, linguistic unitusage: (phonetics) an individual sound unit of speech without concern as to whether or not it is a phoneme of some languageWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language