[syn: about-face, volte-face, reversal, policy change]
VERB (2)
1.  turn, usually 180 degrees; 
2.  change one's mind and assume the opposite viewpoint; 
WordNet (r) 3.0 (2006):
about-face
    n 1: act of pivoting 180 degrees, especially in a military
         formation [syn: about-face, about turn]
    2: a major change in attitude or principle or point of view; "an
       about-face on foreign policy" [syn: about-face, volte-
       face, reversal, policy change]
    v 1: turn, usually 180 degrees
    2: change one's mind and assume the opposite viewpoint