What does "cosign" mean?

The promotion of one musical artist (usually less successful) by another.

What is a synonym for "cosign"?

Common synonyms include: accept, accredit, affirm, approve, authenticate, authorize.

//ˈkoʊ.saɪn// noun, verb, slang

noun, verb, slang ·Moderate ·High school level

Noun

1
The promotion of one musical artist (usually less successful) by another.
"Also, you can't base your entire career on cosigns and big features. At some point, your music has to stand on its own."

Verb

1
To sign a document jointly with another person, sometimes as an endorsement.
2
sign and endorse (another person's signature), as for a loan wordnet
3
To agree with or endorse. informal, transitive
"[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."
4
sign jointly wordnet

"All Jacob ever does is cosign your bullshit."

From co- + sign.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.