About-face (noun)

1. A complete change of direction, opinion, or attitude.
2. An abrupt reversal of position or policy.

Origin:

From military term meaning a 180-degree turn.

Examples:

1. The company made an about-face on its decision to close the factory.
2. The politician made an about-face on his campaign promises.
3. The team made an about-face and went back to their original strategy.
4. The leader's about-face on the issue caused confusion among the supporters.
5. The stock market took an about-face and started to go up.