The term 'turnabout, in slang' can be summarized by two crossword solutions: UIE (3 letters) and UEY (3 letters). UIE stands for 'U-turn', which is a maneuver in which a vehicle makes a 180-degree turn to go in the opposite direction. UEY stands for 'about-face', which is an abrupt change of direction or opinion. Both terms are used figuratively to refer to a sudden reversal of a situation or opinion.