Breadcrumb Home > Thesaurus > S Synonyms of sonic Find synonyms for: Adjective 1. sonic (vs. subsonic) (vs. supersonic), transonic usage: (of speed) having or caused by speed approximately equal to that of sound in air at sea level; "a sonic boom" 2. sonic, audible (vs. inaudible), hearable usage: relating to audible sound; "a sonic wave" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of sonic (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: ailurophobia Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language