What is hang up?

Hang up is a term commonly used when a person terminates or ends a phone call before the other person has finished talking. It can happen intentionally or accidentally. A hang-up can also refer to the phenomenon where a computer or device stops functioning properly, halting or freezing the program or application in use. In social contexts, a hang-up can refer to an attitude or behavior that makes someone hesitant or reluctant to engage in a certain activity or relationship. For example, someone might have a hang-up about public speaking or fear of commitment. In general, the term hang-up refers to any situation or circumstance that causes someone to feel stuck or unable to move forward.