negotiator[noun]Synonyms: mediator, ambassador, delegate, diplomat, honest broker, intermediary, moderator
[TahlilGaran] English Synonym Dictionary ▲
ne‧go‧ti‧a‧tor /nɪˈɡəʊʃieɪtə $ -ˈɡoʊʃieɪtər/
noun [countable] someone who takes part in official discussions, especially in business or politics, in order to try and reach an agreement:
the chief union negotiator [TahlilGaran] Dictionary of Contemporary English ▲