Collaborator
/kəˈlæbəˌreɪtər/
Synonyms
- associate
- contributor
- partner
- teammate
- co-worker
Slang Meanings
A person who betrays their own side in favor of the enemy.
Many viewed him as a collaborator after he joined the opposing team.
Someone who helps others achieve their goals.
He's a real collaborator, always ready to lend a hand.