Breadcrumb Home > Thesaurus > A Synonyms of arbitrator Find synonyms for: Noun1. arbiter, arbitrator, umpire, evaluator, judgeusage: 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"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of arbitrator (Dictionary) ✖ Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language