Breadcrumb Home > Thesaurus > J Synonyms of jillion Find synonyms for: Noun 1. million, billion, trillion, zillion, jillion, gazillion, large indefinite quantity, large indefinite amount usage: a very large indefinite number (usually hyperbole); "there were millions of flies" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of jillion (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: temporize Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language