U-turn

Từ điển Oxford Advanced Learner 8th

ˈU-turn [U-turn U-turns] BrE NAmE noun
1. a turn of 180° that a vehicle makes so that it can move forwards in the opposite direction
•to do/make a U-turn
2. (informal)a complete change in policy or behaviour, usually one that is embarrassing

Example Bank:
•The government has made a spectacular U-turn on taxes.
•a U-turn on education policy
•a government U-turn over plans to cut social security payments
•The government may be forced into an embarrassing U-turn on education policy.