There are several synonyms that can be used for the phrase "cause a fuss." One of the most common alternatives is "create a commotion," which means making a lot of noise or disturbance. Another option is "raise a ruckus," which implies causing a chaotic or disruptive scene. "Stir up trouble" can also be used to convey the same meaning of causing conflict or controversy. Other synonyms for "cause a fuss" include "make a scene," "create a disturbance," "kick up a fuss," and "cause a stir." No matter which phrase you choose, the intention is to describe the act of drawing attention to oneself in a negative or disruptive way.