1. To screw or turn higher.
2. To twist into a strained configuration
Faire des folies, des fredaines, des tours, soit de jeunesse, soit de friponnerie. Ce jeune homme a bien fait des siennes.
(Familier) Mal réaliser (un travail).
1. When you damage something or do something wrong or badly, you screw up or you screw up what you are doing.
2. When people make a mistake that causes a problem for you, they screw you up.