Aha (interjection)

  1. Used to express sudden realization, understanding, or recognition.
  2. Used to express triumph, surprise, or amusement.

Origin:

Mid 19th century: imitative.

Examples:

  1. Aha! I knew I'd seen that face before!
  2. Aha! So that's the secret!
  3. Aha! I finally figured it out!
  4. The detective said, 'Aha! I have found the culprit.'.
  5. Aha! I see what you did there.
Some random words: prepare, adviser, osmium