stooge

باللغة العربية: عَمِيل

1. One who knowingly allows themself to be used for another's profit; a dupe.
2. A magician's assistant who pretends to be a member of the audience.
3. A straight man.
4. A secret informant for police.
5. A confederate; a person who is secretly working for the researcher, unknown to the study participant.

الجمع stooges