Politician's terrible treason (7)

I believe the answer is:

senator

(Other definitions for senator that I've seen before include "Legislative body member" , "US/Roman politician" , "One from uni's governing body" , "Upper House member involved in treason" , "Politician involved in treason" .)

I've seen this clue in The Sun.

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.