The phrase "makes a U-turn" refers to a sharp turn made by a vehicle, usually within a limited space or a narrow road. Some synonyms for this term include "turns around," "reverses course," or "changes direction abruptly." Other possible phrases that can be used to describe this action include "executes a 180-degree turn," "makes a sharp about-face," or "performs a hairpin turn." These synonyms can be applied in a variety of situations, from driving on a crowded street to changing one's mind abruptly in a conversation. Ultimately, using varied vocabulary and phrasing can help add depth and nuance to one's communication.