# cosign

> English word · Verb · IPA /ˈkəʊ.saɪn/ · frequency rank #94,715

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

## Etymology
From co- + sign.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/cosign