What is another word for "delegate"?

Roget's Thesaurus (1911) lists these synonyms for "delegate": ablegate, accession, accredit, acting, advocate, agency, agent, agentship, alter, ambassador, and, answer, appear, appointment, arbitrator, archon, assignment, attache, attorney, auctioneer, authority, bagman, bailiff, behalf, bird, brevet, brief, broker, business, captive, capture, champion, chancellor, charge, charter, clerk, clerkship, close, commercial, commissary.