about-face (third-person singular simple present about-faces, present participle about-facing, simple past and past participle about-faced)
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.
1.(used as a military command to perform an about-face).
Learn More about about-face