Related Clues:

• Erupt
• Bad look
• One that's ill-prepared?
• Turn the air blue
• Severe setback
• 'May you live in interesting times,' e.g.
• Setback
• Evil spell
• Put the whammy on
• Witch's curse
• Say '@#$%!'
• Imprecate
• Explode, as a volcano
• Execration
• Witch's whammy