His manner of sneering at what he called "parlor socialists" (though the phrase was not overwhelmingly new) had a power which made her wish to placate his company of well-fed, speed-loving administrators.
There are no more uses of "placate" in the book.
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She’s trying to walk a line that will placate both farmers and environmentalists.
The dictator is trying to placate the people by giving them a voice in local government.