'about-face' definitions:
Definition of 'about-face'
(from WordNet)
noun
Act of pivoting 180 degrees, especially in a military formation [syn: about-face, about turn]
noun
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]
verb
Turn, usually 180 degrees
verb
Change one's mind and assume the opposite viewpoint