When someone "raises a rumpus," they are causing a scene or disturbance. There are many other words and phrases that can be used as synonyms for this phrase. Some options include "makes a commotion," "stirs up trouble," "creates a stir," "raises a hullabaloo," "causes a fuss," "makes a racket," "disturbs the peace," "causes an uproar," and "raises a clamor." Depending on the context and tone of the situation, one of these alternative phrases may be more appropriate to use than "raises a rumpus." Regardless, all of these options imply that someone has caused a disruption that has grabbed attention and possibly caused some chaos.