cosigner

English Thesaurus

1. one of two or more signers of the same document (as a treaty or declaration) (noun.person)

hypernym	:	signatory, signer, signatory, signer,
definition	:	someone who signs and is bound by a document (noun.person)

derivation	:	co-sign, cosign,
definition	:	sign jointly (verb.social)

2. a signer in addition to the principal signer (to verify the authenticity of the principal signature or to provide surety) (noun.person)

derivation	:	co-sign, cosign,
definition	:	sign and endorse (another person's signature), as for a loan (verb.communication)

3. one of two or more signers of the same document (as a treaty or declaration) (noun.person)

derivation	:	co-sign, cosign,
definition	:	sign jointly (verb.social)

4. a signer in addition to the principal signer (to verify the authenticity of the principal signature or to provide surety) (noun.person)

derivation	:	co-sign, cosign,
definition	:	sign and endorse (another person's signature), as for a loan (verb.communication)