/ Thesaurus / Q Synonyms of quarter horse Find synonyms for: Noun1. quarter horse, saddle horse, riding horse, mountusage: a small powerful horse originally bred for sprinting in quarter-mile races in VirginiaWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language