/ Thesaurus / C Synonyms of checksum Find synonyms for: Noun1. checksum, confirmation, verification, check, substantiationusage: a digit representing the sum of the digits in an instance of digital data; used to check whether errors have occurred in transmission or storageWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: boorish Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language