Related Clues:

• Expression of discovery
• Inspired expression
• 'Got it!'
• Brownie maker
• 'Bingo!'
• "So it was YOU!"
• With 11-Across, tux-renting occasion
• AARP member
• Lab exclamation
• Solving cry
• Like some partners
• "Of course!"
• "So, there you are!"
• "It just came to me!"
• 'Just as I thought!'