Doth U turn is a phrase that means to make a sudden change of direction. It can be used in both metaphorical and literal senses, and it's often associated with making a decision to change course or backtrack. In the context of synonyms, there are several variations of the phrase that could be used in place of "doth U turn". Some of these include "about-face", "reversal", "u-turn", "backtrack", "retreat", and "turnaround". All of these synonyms suggest a change in direction, either physically or mentally, and can be used to convey the same sense of making an abrupt change in course.