cosigner

pronunciation

How to pronounce cosigner in British English: UK [ˌkəʊ'saɪnə] word uk audio image

How to pronounce cosigner in American English: US [ˌkoʊ'saɪnə] word us audio image

Noun:

one of two or more signers of the same document (as a treaty or declaration)
a signer in addition to the principal signer (to verify the authenticity of the principal signature or to provide surety)

Example