Go on a rampage is an expression that means to act in a wild and uncontrolled manner, often involving destruction of property or violence. The two crossword solutions for this term are RIOT (4 letters) and RUNAMOK (7 letters). RIOT is defined as a violent disturbance of the peace by a crowd, while RUNAMOK is defined as to run around wildly, especially in a state of rage or confusion. Both words can be used to describe the same behavior of going on a rampage.