reversal

A major change in attitude or principle or point of view.

Turning in an opposite direction or position.

“the reversal of the image in the lens”

A decision to reverse an earlier decision.

An unfortunate happening that hinders or impedes; something that is thwarting or frustrating.

The act of reversing the order or place of.

Turning in the opposite direction.

A change from one state to the opposite state.

“there was a reversal of autonomic function”

A judgment by a higher court that the judgment of a lower court was incorrect and should be set aside.