Related Clues:

• 'Nuts!'
• 'Looky here!'
• 'Gotcha!'
• 'I see!'
• 'Phooey!'
• Surprised cry
• 'Really!'
• 'Darn!'
• Exclamation of surprise
• Cynic's retort
• See 50-Across
• 'Ah, I see!'
• 'Forget it!'
• Scrooge's cry
• 'Eureka!'