Noun

• S: (n) conciliator, make-peace, pacifier, peacemaker, reconciler (someone who tries to bring peace)
• direct hyponym / full hyponym
• S: (n) appeaser (someone who tries to bring peace by acceding to demands) "An appeaser is one who feeds a crocodile--hoping it will eat him last"--Winston Churchill
• direct hypernym / inherited hypernym / sister term
• S: (n) mediator, go-between, intermediator, intermediary, intercessor (a negotiator who acts as a link between parties)
• S: (n) mediatrix (a woman who is a mediator)
• S: (n) conciliator, make-peace, pacifier, peacemaker, reconciler (someone who tries to bring peace)
• S: (n) diplomat (a person who deals tactfully with others)
• S: (n) harmonizer, harmoniser (a mediator who brings one thing into harmonious agreement with another)
• S: (n) interpreter, translator (someone who mediates between speakers of different languages)
• S: (n) matchmaker, matcher, marriage broker (someone who arranges (or tries to arrange) marriages for others)
• S: (n) moderator (someone who mediates disputes and attempts to avoid violence)
• S: (n) second hand (an intermediate person; used in the phrase `at second hand') "he could learn at second hand from books"
• derivationally related form
• S: (n) pacifier (anything that serves to pacify)
• S: (n) comforter, pacifier, baby's dummy, teething ring (device used for an infant to suck or bite on)