From Longman Dictionary of Contemporary Englishnegotiatorne‧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
Examples from the Corpus
negotiator• Mr Klesch is thus being asked to step in as the disinterested negotiator.• However, negotiators have predicted a settlement by Opening Day, or by the All-Star break.• The good lawyer must be a master negotiator.• Holbrooke has a justified reputation as a hard-nosed negotiator.• The Board's negotiators were furious.• Catterson also observed that e-mail links between plants and subsidiaries of the same company can give union negotiators the advantage of surprise. 