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cosign
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Quick answer
As a verb, cosign means sign a document jointly with another person, sometimes as an endorsement. As a noun, it means the promotion of one musical artist (usually less successful) by another.
Meanings of cosign
3 meaningsverb
To sign a document jointly with another person, sometimes as an endorsement.
informalTo agree with or endorse.
noun
The promotion of one musical artist (usually less successful) by another.
Meanings from Wiktionary (CC BY-SA 4.0) and Open English WordNet (CC BY 4.0).
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