Related Clues:

• One that's ill-prepared?
• Turn the air blue
• 'May you live in interesting times,' e.g.
• Evil spell
• Say '@#$%!'
• Imprecate
• Execration
• Blaspheme
• Put a whammy on
• Put a hex on
• Pox
• Hex
• Unlucky charm
• Use profanity
• Damn