Definition of agitator in English:

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Pronunciation: /ˈajəˌtādər/


1A person who urges others to protest or rebel: an activist and agitator who fought for striking miners
More example sentences
  • In the recent past, there have been protests wherein agitators had either blindfolded themselves or gagged their mouths to express their ire.
  • Furthermore, the authorities must speed up the investigative checks on the detained protesters to ensure that those who were lured into the protest by agitators are set free as soon as possible to return to their loved ones.
  • But for many the policy evokes a chapter of the country's history they would wish to forget - the McCarthy-inspired witch-hunts of the 1950s, aimed at rooting out communist agitators.
2An apparatus for stirring liquid, as in a washing machine or a photographic developing tank.
Example sentences
  • Inadequate agitation can result if the agitator control valve is not adjusted properly or if the pump has inadequate capacity.
  • Pressure at the spray nozzles is determined by the setting of the agitator control valve and the pressure regulator, the capacity of the pump and the pressure loss in lines and fittings between the pressure gauge and the nozzles.
  • Washing machines replaced the wash tub and their mechanical agitators replaced women poling their clothes in steaming, sudsy water.


Mid 17th century (denoting a delegate of private soldiers in the Parliamentary Army during the English Civil War (1642–49)) from Latin, from agitare (see agitate). Sense 1 dates from the mid 18th century.

For editors and proofreaders

Syllabification: ag·i·ta·tor

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