'arbiter' definitions:

Definition of 'arbiter'

From: WordNet
noun
Someone with the power to settle matters at will; "she was the final arbiter on all matters of fashion" [syn: arbiter, supreme authority]
noun
Someone chosen to judge and decide a disputed issue; "the critic was considered to be an arbiter of modern literature"; "the arbitrator's authority derived from the consent of the disputants"; "an umpire was appointed to settle the tax case" [syn: arbiter, arbitrator, umpire]

Synonyms of 'arbiter'

From: Moby Thesaurus

Words containing 'arbiter'