referee
Definitions
An official who watches a game or match closely to ensure that the rules are adhered to.
A person who is appointed to investigate and report on a matter or to settle a dispute.
An expert who evaluates a manuscript or academic paper for publication.
Examples
The referee blew the whistle to signal the end of the match.
The players argued with the referee about the controversial penalty decision.
She decided to referee the local youth soccer tournament this weekend.
Synonyms
umpire arbitrator adjudicator judge mediator official moderator
Antonyms
participant player competitor contestant athlete agitator instigator