n. 25B6; noun MEDIATOR, arbitrator, arbiter, moderator, go-between, middleman, intermediary, intercessor, intervener, conciliator; representative, spokesperson, broker, bargainer.
NEGOTIATOR
Meaning of NEGOTIATOR in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012