[n. uh-bout-feys, uh-bout-feys; v. uh-bout-feys] 
noun, verb, -faced, -fac⋅ing.| 1. | Military. 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. |
| 3. | to execute an about face. |
| 4. | to turn in the opposite direction. |
| 5. | to switch to an opposite opinion. |
