1. uncontrollable fear or anxiety
don't panic, cause a panic
The word ‘panic’ can be a verb or a noun. As a verb, it means a sudden feeling of anxiety often characterized by shallow breathing, tension in the body and an extreme feeling of worry or dread. If you are in ‘a panic’ you are in a state where these symptoms are present. You might hear someone say ‘don’t panic’ if they are encouraging you to remain calm.