Breadcrumb Home > Thesaurus > C Synonyms of cosigner Find synonyms for: Noun 1. cosigner, cosignatory, signer, signatory usage: one of two or more signers of the same document (as a treaty or declaration) 2. cosigner, signer, signatory usage: a signer in addition to the principal signer (to verify the authenticity of the principal signature or to provide surety) WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of cosigner (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: rort Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language