A person chosen to settle the issue between parties engaged in a dispute. See Synonyms at judge. (noun)
One having the ability or power to make authoritative decisions; an arbiter. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "arbitrator" in a sentence
"The arbitrator is getting impatient and cuts you off."
"The arbitrator simply ruled that, compared to the punishment meted out to the others, Way's was too severe, and the arbitrator is right."
"Why else do you think the arbitrator is holding off on a decision on that subject?"