/ Thesaurus / C Synonyms of cash in Find synonyms for: Verb1. cash, cash in, exchange, change, interchangeusage: exchange for cash; "I cashed the check as soon as it arrived in the mail"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language