Noun
A person, or one of two or more persons, chosen by parties who have a controversy, to determine their differences. See Arbitration.
One who has the power of deciding or prescribing without control; a ruler; a governor.
Source: Webster's dictionarythe critic was considered to be an arbiter of modern literature Source: Internet
the arbitrator's authority derived from the consent of the disputants Source: Internet
an umpire was appointed to settle the tax case Source: Internet
An arbitrator says a former Canadian Pacific train conductor who was fired over social media posts is entitled to monetary compensation, but not to getting her job back at the railway company. Source: Internet
Both sides agreed to submit the matter to a neutral arbitrator, and settled on Landis, who agreed to take the case in June 1921. Source: Internet
His ability as attorney and arbitrator, used in the service of the common people, gained him further popularity. Source: Internet