mediator
noun
[ ˈmiːdɪeɪtə ]
• a person who attempts to make people involved in a conflict come to an agreement; a go-between.
Similar:
arbitrator,
arbiter,
negotiator,
conciliator,
go-between,
middleman,
intermediary,
moderator,
intervenor,
interceder,
intercessor,
reconciler,
broker,
honest broker,
liaison officer,
peacemaker,
umpire,
referee,
adjudicator,
judge,
