There are several synonyms for the phrase "do a u-turn" which can be used in different contexts. The most common synonym for this term is "make a U-turn". Other synonyms include "turn around", "perform a 180-degree turn", "execute a reversal", "make a reversal", "make a quick turn", "backtrack", "reverse course", "turn back", "retrace one's steps" and "go in the opposite direction". These synonyms convey the same meaning and can be utilized based on the situation at hand. Whether it's a driver on the road or a person changing their mind, these synonyms provide alternative ways to describe the act of turning around or reversing course.