One in a revolt (5)

I believe the answer is:

rebel

(Other definitions for rebel that I've seen before include "Rejector of authority" , "Revolt, mutiny" , "Mutineer or dissenter" , "He resists authority" , "Insurgent, renegade" .)

I've seen this clue in the Universal.

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.