Arbiters are people who make decisions and settle disputes. They are often used in sports, where they are referred to as referees (REFS) or umpires (UMPS). They are responsible for making sure that the rules of the game are followed and that the players abide by them. They also have the authority to make decisions on any matters that arise during the game. In other contexts, arbiters may be appointed to resolve disputes between two or more parties. They are impartial and their decisions are binding.