That is, the person who USES them has his own private definition, but allows his hearer to think he means something quite different.

也就是说，使用这类词的人有自己的私人定义，却让他的听者认为他有很不一样的意思。

youdao

When he says that his way of life has been private, he means that he has pursued a policy of, let's call it "the principled abstinence " from public life."

当他提到自己的生活方式是私密的时候，他所提的是他追求一种策略，我们可以称之为，“原则性疏离,公共生活“

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