Meaning

• To discover, as by asking or investigating.

  "I don't know who the twenty-first president of the United States was, but it should be very easy to find out."

• To discover or expose (someone) as disobedient, dishonest, etc.

  "He had been fiddling the books for years, but finally he was found out."

• To uncover a weakness (in someone).

  "He may cope with the multiple choice questions, but the written exam will find him out."