a person appointed by two opposite sides to settle a dispute

settler of a dispute

a person, business, that buys and sells (business shares etc) for others

financial expert

a uniformed porter at the entrance to a hotel, large shop etc

person carrying information to another

a person employed in diplomacy for her or his country e.g. an ambassador

politician, consul

separate entry below

person who negotiates

a person who makes arrangements for two people who do not meet at first

person acting as an agent

(of) a person acting as a link between (groups), especially to get agreement

person who negotiates

a male spokesperson

communicator

a person speaking, or chosen, as the representative of a group

person who communicates for another

an expert in tactics

politician, consul

a person who controls games and competitions

person who settles dispute