/ Thesaurus / C Synonyms of cookie jar Find synonyms for: Noun1. cookie jar, cooky jar, jarusage: a jar in which cookies are kept (and sometimes money is hidden)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: candid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language