(used as a military command to perform an about-face).
—n., v., -faced, -fac•ing.
1. Mil.a turn of 180° from the position of attention.
2. a complete, sudden change in position, direction, principle, attitude, etc.: They've done an about-face in their foreign policy.
1. to execute an about face.
2. to turn in the opposite direction.
3. to switch to an opposite opinion.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.