conciliate v. + Add to list UK //kənsˈɪlɪˌeɪt// con·cil·i·ate Archaic SynonymsEtymology Synonyms appeaseassuagegentlegruntlelenifymollifypacifyplacatereconcileOriginLATconciliātus→ENconciliate Borrowed from Latin conciliātus, perfect passive participle of conciliō (“I unite”), from concilium (“council, meeting”).