arbitro

n. arbiter, arbitrator; referee, ref, umpire; adjudicator, decider

v. arbitrate, referee, umpire; mediate, act as a mediator in a dispute

n. arbiter, arbitrator; mediator; umpire, referee

v. arbitrate, act as a mediator in a dispute; serve as a judge

n. arbiter, arbitrator, adjuster, adjudicator, judge, hakim, moderator, settler, referee, umpire

v. arbitrate, award, referee

V
think| judge; consider; be settled/decided on (PASS)

= arbiter, referee, umpire.
Ex: In almost no circumstances can the librarian be said to be the sole arbiter of what is or is not acceptable to the user.
Ex: Umpires and referees officiate at sporting events, making sure the rules and regulations of the game are followed.
Ex: Umpires and referees officiate at sporting events, making sure the rules and regulations of the game are followed.
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* juez árbitro = arbitrator.

= officiate, referee.
Ex: Umpires and referees officiate at sporting events, making sure the rules and regulations of the game are followed.
Ex: Many had been refereeing for many years, so it is perhaps not surprising that most of them thought things had not changed for the better.