Related Clues:

• 'Nuts!'
• 'You gotta be kidding!'
• 'Go ahead and ask'
• 'Horrors!'
• Emphatic denial
• 'Whoops!'
• 'Phooey!'
• 'Yikes!'
• 'Darn!'
• 'It can't be!'
• Fire
• 'Rats!'
• Mild expletive
• 'Dagnabbit!'
• 'Fiddlesticks!'