[koh-sahy-ner, koh-sahy-]


a cosignatory.
a joint signer of a negotiable instrument, especially a promissory note.

Origin of cosigner

First recorded in 1900–05; co- + signer Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for cosigner

Contemporary Examples of cosigner

Word Origin and History for cosigner

also co-signer, 1946, agent noun from cosign; earlier in this sense was cosignatory (1865).

Online Etymology Dictionary, © 2010 Douglas Harper