The term 'cause a disturbance' can be expressed in four different ways: RIOT (4 letters), DISRUPT (7 letters), UPSET (5 letters), and stir up trouble (13 letters). A RIOT is an act of violence or destruction, usually involving a large group of people. DISRUPT means to interfere with the normal course of events or activities. To UPSET is to cause distress or agitation. Stirring up trouble is to deliberately create a difficult situation or provoke someone.