Not bound by rules (9)

I believe the answer is:

arbitrary

(Other definitions for arbitrary that I've seen before include "Based on whims or irrelevancies" , "lacking principles" , "Based on random choice" , "Capricious" .)

I've seen this clue in The Times and the Sydney Morning Herald.

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.