/ Thesaurus / S Synonyms of steam powered Find synonyms for: Adjective1. steam-powered, powered (vs. unpowered)usage: powered by a steam engine; "a steam-powered locomotive"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: supine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language