Synonyms of adjudicator

2 Syllables
maven, fixer, judge, holdout
3 Syllables
referee, umpire, mediator, appraisers, go-between, refereed, arbiter, chancellors, arbiters, refereeing, appraiser, ombudsman, chancellor, magister
4 Syllables
negotiators, moderator, arbitrators, conciliator, reconciler, compromisers, evaluator, evaluators, negotiator, middleperson, jurisprudent, compromiser, intermedium, arbitrator