Find out Definition 1 of 3Pro Tip 1/3Unexpected News Used when information is surprisingly discovered, not intentionally sought out. I found out I was adopted on my 18th birthday. Pro Tip 2/3Positive or Negative Can express either good news or bad news that impacts the listener. He found out he passed the exam. Pro Tip 3/3Acquiring Knowledge Emphasizes the process of coming to know something, often casually. I found out the library's hours by asking a librarian.