There are several synonyms that can replace the word "rehearses", especially when it comes to practicing or preparing for a performance. One of them is "practices", which refers to the act of repeated exercising to improve one's skills or abilities. Another synonym is "recites", which means to perform verbally or to repeat from memory. Additionally, "drills" can also be used, which implies a more intensive, repetitive type of practice to achieve a specific goal. Finally, "prepares" is also a suitable alternative, as it encompasses the act of getting ready for a situation by studying and practicing beforehand.