There are various synonyms for the phrase "dost u-turn", which is commonly used to refer to changes in direction or decision. Some of the synonyms include "backtrack", "reverse course", "turnback", "about-face", "change of heart", "U-turn", "reversal", "flip-flop", "change of mind", "rethink", and "reconsider". These synonyms all have slightly different connotations but share the idea of changing direction or reversing a decision. It is important to be mindful of which synonym is used in a particular context to ensure clear communication and avoid confusion.