Related Clues:

• Say 'Boo!' to, say
• Be an effective ghost
• Cause to jump
• Find, with ''up''
• Frighten or menace like roisterer
• Frighten, alarm
• Frighten or intimidate
• Cause fright, alarm
• Cause alarm
• A wrong is inside. What a frightful thing to do!
• That's a frightful thing to do to anyone
• The sort of crow that can't fly for fright
• Give the creeps
• Word before quotes or tactics
• Throw into a panic