Breadcrumb Home > Thesaurus > J Synonyms of jackrabbit Find synonyms for: Noun 1. jackrabbit, hare usage: large hare of western North America Verb 1. jackrabbit, startle, jump, start usage: go forward or start with a fast, sudden movement WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of jackrabbit (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: anomie Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language