Agitator
Agitator ({not transcribed}) , noun
[Latin]
1.
One who agitates; one who stirs up or excites others; as, political reformers and agitators.
2.
(Eng. Hist.) One of a body of men appointed by the army, in Cromwell's time, to look after their interests; -- called also adjutators. — Clarendon
3.
An implement for shaking or mixing.