someone chosen to judge and decide a disputed issue; "the critic was considered to be an arbiter of modern literature"; "the arbitrator''s authority derived from the consent of the disputants"; "an umpire was appointed to settle the tax case" مرادفات: arbitrator, umpire,
someone with the power to settle matters at will; "she was the final arbiter on all matters of fashion" مرادفات: supreme authority,