Simple Definition of cosigner
: a person who signs an official document (such as a loan, contract, or law) with another person : a person who cosigns something
Full Definition of cosigner
: cosignatory; especially : a joint signer of a promissory note
Examples of cosigner
Both senators are cosigners of the bill.
My mother agreed to be a cosigner on my car loan.
First Known Use of cosigner
Seen and Heard
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