Breadcrumb Home > Thesaurus > U Synonyms of upsurge Find synonyms for: Noun 1. rush, spate, surge, upsurge, flow, flowing usage: a sudden forceful flow 2. surge, upsurge, increase, step-up usage: a sudden or abrupt strong increase; "stimulated a surge of speculation"; "an upsurge of emotion"; "an upsurge in violent crime" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of upsurge (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: evanescent Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language