Related Clues:

• Instill fear in
• Curl the hair of
• Make jump
• Oct. 31 goal
• What Casper tries not to do
• Cause alarm to
• Cause fear in
• Suddenly spook
• Give a turn
• Adrenaline producer
• Say 'Boo!' to, say
• Be an effective ghost
• Cause to jump
• Scare slightly
• Surprise with a "Boo!"