unhinged (adjective)

1. In the horror film, the unhinged serial killer terrorized the town with his deranged acts of violence.

2. The main character in the novel slowly becomes unhinged after experiencing a traumatic event.

3. Why did the door go to therapy? Because it was feeling a little unhinged!

4. The antagonist in the anime series is portrayed as an unhinged villain with a thirst for power and destruction.