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cosign

[koh-sahyn, koh-sahyn]
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verb (used with or without object)
  1. to sign as a cosigner.
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Origin of cosign

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for cosign

underwrite, sign, insure, protect, secure, prove, support, assure, maintain, ensure, consent, sanction, assent, back, accede, acquiesce, favor, take, endorse, boost

Word Origin and History for cosign

v.

also co-sign, by 1944, from co- + sign (v.). Related: Cosigned; cosigning.

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Online Etymology Dictionary, © 2010 Douglas Harper