Someone who negotiates (confers with others in order to reach a settlement).

synonyms: negotiant, treater.

Roget 724: mediation, mediatorship^†, mediatization^†; intervention, interposition, interference, intermeddling, intercession; arbitration; flag of truce etc. 723; good offices, peace offering; parley, negotiation; diplomatics^†, diplomacy; compromise etc. 774.    [person who mediates] mediator, arbitrator, intercessor, peacemaker, makepeace^†, negotiator, go-between; diplomatist etc. (consignee) 758; moderator; propitiator; umpire.    ... show more

Roget 758: consignee, trustee, nominee, committee.    agent, delegate; commissary, commissioner; emissary, envoy, commissionaire [Fr.]; messenger etc. 534.    diplomatist, diplomat, diplomate, corps diplomatique [Fr.], embassy; ambassador, embassador^†; representative, resident, consul, legate, nuncio, internuncio^†, charge d'affaires [Fr.], attache.    vicegerent etc. (deputy) 759; plenipotentiary.    functionary, placeman^†, curator; treasurer etc. 801; factor, bailiff, clerk, secretary, attorney, advocate, solicitor, proctor, broker, underwriter, commission agent, auctioneer, one's man of business; factotum etc. (director) 694; caretaker; dalal^†, dubash^†, garnishee, gomashta^†.    negotiator, go-between; middleman; under agent, employe; servant etc. 746; referee, arbitrator etc. (judge) 967.    traveler, bagman, commis-voyageur [Fr.], touter^†, commercial traveler, drummer [U.S.], traveling man.    newspaper correspondent, own correspondent, special correspondent.    ... show more

Roget 769: compact, contract, agreement, bargain; affidation^†; pact, paction^†; bond, covenant, indenture; bundobast^†, deal.    stipulation, settlement, convention; compromise, cartel.    Protocol, treaty, concordat, Zollverein [G.], Sonderbund [G.], charter, Magna Charta [Lat.], Progmatic Sanction, customs union, free trade region; General Agreement on Tariffs and Trade, GATT; most favored nation status.    negotiation etc. (bargaining) 794; diplomacy etc. (mediation) 724; negotiator etc. (agent) 758.    ratification, completion, signature, seal, sigil [Lat.], signet.    ... show more

Dutch: onderhandelaar
Polish: negocjator