What is unsub meaning?

The term "unsub" is a short form of Un-Sub, which stands for the Unknown Subject. This term is commonly used in law enforcement agencies, particularly in the investigation of criminal cases. An Unsub refers to an individual who is responsible for a criminal activity such as a serial killer, terrorist, or kidnapper. The term is used because the individual's identity and motives are unknown, and law enforcement authorities are trying to identify and track down the person. The concept of the Unsub is often used in popular media as well, particularly in crime dramas and thrillers, to create suspense and tension in the storyline.