aˌbout-ˈface (also about-turn British English) noun [countableC usually singular]
CHANGE YOUR MINDa complete change in the way someone thinks or behaves 〔思想、行为的〕大转变SYN U-turn
The administration seems to have done a complete about-face on gun-control.
政府对枪支管制的态度似乎来了个180度大转变。
Examples from the Corpus
about-face• An about-face between now and then is possible but not likely.• Intel said it is not making any about-face in its strategy.• Belinda felt bewildered by his apparentabout-face.• In recent months, Clinton has made a substantialabout-face in his drug strategy.• Of all the reversals, though, the most destructive in the long run was the about-face of the Communist world.• The about-face came quickly, though not easily and not without controversy.• The regents and provost are trying to cast their about-face as a positive move.