confederate🔊

Of, relating to, or united in a confederacy

Banded together; allied.

(as a participle) Confederated.

A member of a confederacy.

An accomplice in a plot.

(psychology) An actor who participates in a psychological experiment pretending to be a subject but in actuality working for the researcher.

To unite persons or states in a league, confederacy or conspiracy; to ally, league.