8 letters · 11 points in Scrabble
noun a negotiator who acts as a link between parties
originFrom Middle English mediatour, mediatoure, mediatur, medyatour, from Middle French mediateur, mediatur or its etymon Latin mediātor (“one who mediates”), from mediātum, supine of mediō (“be in the middle”), from medius (“middle”). By surface analysis, mediate + -or.
Etymology from Wiktionary, CC BY-SA 3.0