Related Clues:

• 'Nuts!'
• Sound of reproach
• 'Phooey!'
• 'Darn!'
• 'Yecch!'
• Cynic's retort
• See 50-Across
• Scornful sound
• 'Forget it!'
• 'Yuck!'
• Scrooge's cry
• 'Naughty, naughty!'
• 'Naughty!'
• Sound of laughter
• Smell