arbitrator

noun

ar·​bi·​tra·​tor ˈär-bə-ˌtrā-tər 

: one that arbitrates a dispute : arbiter

an impartial arbitrator

Synonyms of arbitrator

• referee
• judge
• umpire

Examples of arbitrator in a Sentence

Both sides agreed to accept a decision by an impartial arbitrator.

the couple finally agreed to let the salesclerk be the final arbitrator and tell them which shirt looked best

Recent Examples on the Web

The arbitrator found the dealer violated Florida law and told it to take back the car and pay Muratori damages and some legal fees. —Steve Maugeri, CBS News, 17 Apr. 2026

Appeals from Doncic and Cunningham were successful, but Minnesota’s Anthony Edwards was denied by an independent arbitrator, the NBA and the NBPA announced. —Los Angeles Times, 16 Apr. 2026

Minnesota Timberwolves guard Anthony Edwards, however, had his case for becoming awards-eligible denied by an independent arbitrator. —Benjamin Royer, Oc Register, 16 Apr. 2026

The federal 9th Circuit Court of Appeals issued an opinion this week supporting an arbitrator’s findings that the union may follow the card-signing process. —Sacbee.com, 10 Apr. 2026

Word History

Etymology

Middle English, borrowed from Medieval Latin arbitrātor "umpire," from Latin arbitrārī "to consider, judge, arbitrate" + -tor, agent suffix

First Known Use

15th century, in the meaning defined above

Rhymes for arbitrator

• activator
• actuator
• agitator
• alligator
• allocator
• alternator
• animator
• annotator
• applicator
• aspirator
• aviator
• calculator

Kids Definition

arbitrator

noun

ar·​bi·​tra·​tor ˈär-bə-ˌtrāt-ər 

: a person chosen to settle differences in a disagreement

Legal Definition

arbitrator

noun

ar·​bi·​tra·​tor ˈär-bə-ˌtrā-tər 

: an impartial person or group that is given the power by disputing parties to resolve their dispute compare mediator