pacify
1. [ verb ] cause to be more favorably inclined; gain the good will of
Synonyms: appease mollify conciliate gentle gruntle placate assuage lenify
Examples:

"She managed to mollify her angry boss"

Related terms: calm peace peace appeaser conciliation placation comforter
2. [ verb ] fight violence and try to establish peace in (a location)
Examples:

"The U.N. troops are working to pacify Bosnia"

Related terms: establish appeaser peace