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Noun: arbiter  aa(r)-bi-tu(r)
  1. Someone with the power to settle matters at will
    "she was the final arbiter on all matters of fashion";
    - supreme authority
  2. Someone chosen to judge and decide a disputed issue
    "the critic was considered to be an arbiter of modern literature";
    - arbitrator, umpire

Derived forms: arbiters

Type of: evaluator, expert, judge

Encyclopedia: Arbiter