cosigner

/ˈkoʊˌsaɪnər/
noun
  1. A person who signs a loan, lease, or other legal document along with the main borrower, agreeing to take responsibility if the borrower fails to pay.
    • He asked his sister to be a cosigner on his student loan.
    • Without a cosigner, she couldn't qualify for the apartment lease.
    • The bank requires a cosigner for anyone with a low credit score.
Antonyms
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