org/wiki/let_on) ). In your case, I would say that "reveal" is the closest. She is smart, but she doesn't like to make this obvious to people.
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let on: to reveal, disclose, or divulge (https://en.wiktionary.org/wiki/let_on)).
In your case, I would say that "reveal" is the closest. She is smart, but she doesn't like to make this obvious to people.