cosign

Verb

 * 1) To sign a document jointly with another person, sometimes as an endorsement.
 * 2)  To agree with or endorse.

Translations

 * French:
 * German: mitzeichnen; mitunterzeichnen
 * Italian: cofirmare
 * Japanese:
 * Portuguese: coassinar
 * Spanish:

Noun

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