/ ˌvɒlt ˈfɑːs; NAmE ˌvɔːlt/ noun
[ sing. ] ( formal ) a complete change of opinion or plan
SYN about-turn :
This represents a volte-face in government thinking.
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WORD ORIGIN
early 19th cent.: from French , from Italian voltafaccia , based on Latin volvere to roll + facies appearance, face.