He scented an important fact of which he had known nothing, and was already filled with dread that Mitya might be unwilling to disclose it.
There are no more uses of "disclose" in the book.
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As if she’d had to do it too many times before and it had gone badly—the admission of wealth that’s greeted with too much enthusiasm, the disclosure of a secret identity that she herself didn’t create.
Gillian Flynn -- Gone Girl
Before I show you this, you have to give me a verbal non-disclosure agreement, okay?