Word.ws English Dictionary

co-sign

co-sign is the alternative form of cosign.

Meaning of cosign

Verb

cosign (third-person singular simple present cosigns, present participle cosigning, simple past and past participle cosigned)

  1. To sign a document jointly with another person, sometimes as an endorsement.
  2. (informal, transitive) To agree with or endorse.
    • [Ilhan] Omar was left twisting in the wind earlier this year after facing spurious charges of antisemitism, a display of Democratic cowardice co-signed by Chelsea Clinton, Chuck Schumer, and most every other Democrat with a congressional leadership position.2019 July 19, Noah Kulwin, “Democrats Fail the Left, Once Again”, in Jewish Currents

See all 3 meanings of cosign

Forms of co-sign

Verb
third-person singular presentco-signs
present participleco-signing
past participleco-signed
pastco-signed
Noun
pluralco-signs

Origin of co-sign

From co- + sign.

Questions about co-sign

What is co-sign the alternative form of?
Co-sign is the alternative form of cosign.

Words near co-sign in the dictionary

  1. co-scripters
  2. co-selector
  3. co-selectors
  4. co-sibling-in-law
  5. co-siblings-in-law
  6. co-sign
  7. co-signed
  8. co-signing
  9. co-signs
  10. co-sister
  11. co-sister-in-law

Source and license

Adapted from Wiktionary: co-sign (page history and authors); cosign (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “co-sign.” Word.ws, https://word.ws/co-sign. Based on Wiktionary, CC BY-SA 4.0.