agitator[noun]Synonyms: troublemaker, agent provocateur, firebrand, instigator, rabble-rouser, revolutionary, stirrer
(informal) [TahlilGaran] English Synonym Dictionary ▲
a‧gi‧ta‧tor /ˈædʒəteɪtə, ˈædʒɪteɪtə $ -ər/
noun [countable] someone who encourages people to work towards changing something in society – used to show disapproval:
a political agitator [TahlilGaran] Dictionary of Contemporary English ▲