What is another word for "referee"?

Roget's Thesaurus (1911) lists these synonyms for "referee": accusation, adjudge, advocate, agent, ambassador, arbiter, arbitrator, archon, assessor, assistant, assize, attache, attorney, auctioneer, bagman, bailiff, barmaster, barrister, beak, box, broker, business, cadi, case, censor, chancellor, charge, clerk, come, commercial, commissary, commission, commissionaire, commissioner, committee, common, conservator, consignee, consul, corps.