WordWeb Online

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

See also: arbitrate

Type of: evaluator, expert, judge

Encyclopedia: Arbiter