What is another word for cosigner?
Pronunciation: [kˈɒsa͡ɪnə] (IPA) 
A cosigner is someone who agrees to sign a loan or financial agreement along with the primary borrower. Synonyms for the term "cosigner" include guarantor, co-obligor, co-signatory, surety, and co-debtor. A guarantor is someone who assumes responsibility for loan payments if the borrower defaults. A co-obligor is someone who shares legal responsibility for loan payments. A co-signatory is someone who signs a document along with the primary participant. A surety is a person who promises to pay debts or fulfill obligations if the borrower defaults. A co-debtor is a person who shares liability for loan payments with the primary borrower. All of these terms refer to someone who is legally obligated to repay a loan if the original borrower is unable to do so.
