agitator

/ˈædʒɪteɪtər/
noun
  1. A person who tries to cause political or social change by stirring up public feeling, often in a disruptive way.
    • During the labor strike, the company blamed outside agitators for the unrest.
    • The protest leader was known as a skilled agitator who could rally a crowd quickly.
    • She was labeled an agitator by the government for organizing peaceful demonstrations.
  2. A device or machine used for stirring or mixing, especially in industrial or laboratory processes.
    • The laboratory agitator runs at a low speed to avoid damaging the sample.
    • The chemical plant uses a large agitator to keep the liquid mixture uniform.
    • He installed a small agitator in the tank to prevent the paint from settling.
Antonyms
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