about-face
英[ə'baʊtˌfeɪs]
美[əˈbaʊtˈfes]
柯林斯高阶英汉双解学习词典释义
英英词典释义
Noun
1. act of pivoting 180 degrees, especially in a military formation
2. a reversal in attitude or principle or point of view;
"an about-face on foreign policy"Verb
1. turn, usually 180 degrees
2. change one's mind and assume the opposite viewpoint