Definition of confederating:
(adj) :
Of, relating to, or united in a confederacy
(adj) :
Banded together; allied.
(n) :
A member of a confederacy.
(n) :
An accomplice in a plot.
(v) :
(ambitransitive) To unite persons or states in a league, confederacy or conspiracy; to ally, league.
(n) :
(psychology) An actor who participates in a psychological experiment pretending to be a subject but in actuality working for the researcher.