ap ‧ pease /əˈpiːz/ BrE AmE verb [transitive] formal
[ Date: 1300-1400 ; Language: Old French ; Origin: apaisier , from pais 'peace' ]
to make someone less angry or stop them from attacking you by giving them what they want:
They attempted to appease international opposition by promising to hold talks.
—appeasement noun [uncountable and countable] :
Chamberlain’s policy of appeasement towards Hitler in the 30s