"she was the final arbiter on all matters of fashion"
"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"
Appointed arbiter of the dispute.
出自: W. H. Dixon
Twilight..short Arbiter 'Twixt Day and Night.
出自: fig.