agitatorial

agitator

[aj-i-tey-ter]
noun
1.
a person who stirs up others in order to upset the status quo and further a political, social, or other cause: The boss said he would fire any union agitators.
2.
a machine or device for agitating and mixing.

Origin:
1730–40; agitate + -or2

agitatorial [aj-i-tuh-tawr-ee-uhl, -tohr-] , adjective
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World English Dictionary
agitator (ˈædʒɪˌteɪtə)
 
n
1.  a person who agitates for or against a cause, etc
2.  a device, machine, or part used for mixing, shaking, or vibrating a material, usually a fluid

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

agitator
1640s, from agitation (q.v.); originally "elected representative of the common soldiers in Cromwell's army," who brought grievances (chiefly over lack of pay) to their officers and Parliament. Political sense is first recorded 1734, and negative overtones began with its
association with Irish patriots such as Daniel O'Connell (1775-1847). Historically, in Amer.Eng., often with outside and referring to people who stir up a supposedly contented class or race.
Online Etymology Dictionary, © 2010 Douglas Harper
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