con ‧ cil ‧ i ‧ ate /kənˈsɪlieɪt/ BrE AmE verb [intransitive and transitive] formal
[ Date: 1500-1600 ; Language: Latin ; Origin: past participle of conciliare 'to bring together, unite' , from concilium ; ⇨ ↑ council ]
to do something to make people more likely to stop arguing, especially by giving them something they want:
efforts to conciliate the unions
—conciliator noun [countable]