about-face

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