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Verb: about-face  u'bawt,feys
  1. Turn, usually 180 degrees
  2. Change one's mind and assume the opposite viewpoint
Noun: about-face  u'bawt,feys
  1. Act of pivoting 180 degrees, especially in a military formation
    - about turn
  2. A major change in attitude, principle or point of view
    "an about-face on foreign policy";
    - volte-face, reversal, policy change

Derived forms: about-facing, about-faces, about-faced

Type of: change, rethink, reversal, reverse, reversion, turn, turnabout [N. Amer], turnaround

Encyclopedia: About-face