Powerful ruler (9)

I believe the answer is:

potentate

'powerful ruler' is the definition.
(I've seen this before)

This is all the clue.

(Other definitions for potentate that I've seen before include "A monarch or ruler" , "authority" , "Powerful autocratic ruler" , "Mogul" .)

I've seen this clue in the Sydney Morning Herald, The Sunday Times, The Telegraph, the LA Times and The Times.

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.