Breadcrumb Home > Thesaurus > O Synonyms of outsize Find synonyms for: Noun 1. outsize, size usage: an unusual garment size (especially one that is very large) Adjective 1. outsize, outsized, oversize, oversized, large (vs. small), big (vs. little) usage: larger than normal for its kind WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of outsize (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: suigeneris Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language