Related Clues:

• "Now we're getting somewhere"
• Solution reaction
• "And what have we here?"
• "Caught in the act!"
• "Now I understand!"
• Gottcha!
• Discovery call
• 'So!'
• "I have the answer!"
• Revelatory, as a moment
• Surprised sound
• "Ah, I see!"
• Crossword solver's cry
• Opposite of "Huh?"
• An ___ moment