Synonyms to placater

peacemaker, adjudicator, alleviative, alleviator, anodyne, appeaser, arbitrator, assuager, balm, calmative, conchie, conciliator, conscientious objector, cushion, diplomat, dolorifuge, dove, family counselor, go-between, interceder, intermediary, intermediator, lenitive, make-peace, marriage counselor, mediator, mitigator, moderator, modulator, mollifier, negotiator, pacificator, pacificist, pacifier, pacifist, palliative, peace lover, peacekeeper, peacemonger, peacenik, propitiator, reconciler, referee, restraining hand, salve, sedative, shock absorber, smoother-over, soother, soothing syrup, stabilizer, temperer, tranquilizer, umpire, wiser head