early 15c., from Old French arbitratour (13c.), from Latin arbitrator "a spectator, hearer, witness, judge," agent noun from past participle stem of arbitrari, from arbiter (see arbiter). The legal form of popular arbiter; in modern usage, an arbiter makes decisions of his own accord and is accountable to no one but himself; an arbitrator (early 15c.) decides issues referred to him by the parties.
1. The company should put its claims up for review by an arbitrator.
2. He served as an arbitrator in a series of commercial disputes in India.
3. The award of the arbitrator is binding and the practice is frequently used in the US.
4. An Arbitrator is a neutral person who resolves disputes between parties.