Meaning of “panic” - Learner’s Dictionary

panic

verb [ I, T ] uk us /ˈpænɪk/ (present participle panicking, past tense and past participle panicked)

B2 to suddenly feel so worried or frightened that you cannot think or behave calmly, or to make someone feel this way:

Don't panic, we've got plenty of time.
You panicked me by telling me I was late.

(Definition of “panic verb” from the Cambridge Learner’s Dictionary © Cambridge University Press)