cosign

About 0.02 uses per million words.

Meaning

1. verb To sign a document jointly with another person, sometimes as an endorsement.
2. verb To agree with or endorse.
3. noun The promotion of one musical artist (usually less successful) by another.

Similar words

autosign sign subsign autograph make one's mark ensign subscribe initial tick off signcrypt

Often followed by

the a for on your or with all checks