Fail to keep one's cool (5)

I believe the answer is:

panic

(Other definitions for panic that I've seen before include "Widespread fear" , "Sudden overpowering fear" , "Frantic fear" , "Have kittens" , "Overwhelming feeling of fear and anxiety" .)

I've seen this clue in the King Feature Syndicate.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.