The phrase "does an about face" is an idiomatic expression that refers to a complete reversal or change in one's opinion, attitude, or course of action. This expression originated from military terminology, specifically from the drill command terminology used in the military to describe a specific move. In this context, "about face" is a command given to troops to turn around 180 degrees, changing the direction they were facing.
When used figuratively, "does an about face" is used to describe a sudden and complete change in a person's viewpoint, stance, or behavior. It suggests a swift and dramatic reversal, often surprising or unexpected. Typically, this expression is employed when someone makes an abrupt shift from one position or belief to an entirely opposite one.
For example, if someone strongly advocates for a particular political party or ideology, but then unexpectedly shifts their allegiance and begins to support an opposing party, we can say that person "did an about face." Similarly, if an individual has one opinion on a certain matter, but then suddenly changes their perspective and voices an opposing viewpoint, we can say they "do an about face."
In summary, "does an about face" signifies a complete reversal or turnaround, usually in terms of a change in opinion, attitude, or course of action.
