Related Clues:

• Crackers
• Eccentric
• Wacky
• Mild expletive
• 'Oh, bother!'
• 'Dagnabbit!'
• 'Fiddlesticks!'
• Mild oath
• Kin of 'shucks'
• 'Shucks!'
• Bonkers
• Fieldsian expletive
• 'Fudge!'
• Off one's rocker
• 'Shoot!'