placater


pla·cate

P0342200 (plā′kāt′, plăk′āt′)tr.v. pla·cat·ed, pla·cat·ing, pla·cates To allay the anger of, especially by making concessions; appease. See Synonyms at pacify.
[Latin plācāre, plācāt-, to calm; see plāk- in Indo-European roots.]
pla′cat′er n.pla·ca′tion (plā-kā′shən) n.pla′ca·to′ry (-tôr′ē), pla′ca′tive (-kā′tĭv) adj.

placater

(pləˈkeɪtə) na person or thing that placates someone