Answer: stirsup

AnswerCrossword Clue
STIRSUPProvokes
STIRSUPArouses
STIRSUPGets a rise out of
STIRSUPAgitates.
STIRSUPRoils.
STIRSUPAgitates
STIRSUPRoils
STIRSUPFoments
STIRSUPInstigates
STIRSUPArouses, as a mob
STIRSUPIncites