verb (used with object), pla·cat·ed, pla·cat·ing.
Origin of placate1
Word Origin for placate
1670s, a back-formation from placation or else from Latin placatus "soothed, quiet, gentle, calm, peaceful," past participle of placare "to calm, appease, quiet, soothe, assuage," related to placere "to please" (see please). Related: Placated; placating; placatingly.