Disruptive person (12)
I believe the answer is:
troublemaker
(Other definitions for troublemaker that I've seen before include "Ringleader" , "Deliberate causer of problems" , "Inciter of unrest" , "One inciting unrest" , "Cause of conflict" .)
I believe the answer is:
troublemaker
(Other definitions for troublemaker that I've seen before include "Ringleader" , "Deliberate causer of problems" , "Inciter of unrest" , "One inciting unrest" , "Cause of conflict" .)