verb
- to sign a document jointly with another person, especially to guarantee payment of a loan
- to approve or support something publicly
Usage: financial/legal
Usage: informal
Examples
- My parents had to cosign the loan for my car.
- She asked her uncle to cosign her apartment lease.
- The bank requires someone with good credit to cosign the mortgage.
- I won’t cosign that risky business venture.
- The senator refused to cosign the controversial bill.
- Several celebrities cosigned the environmental petition.