Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • verb Alternative form of cosign.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • verb sign jointly
  • verb sign and endorse (another person's signature), as for a loan

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

co- +‎ sign

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