Related Clues:

• Phobia
• Four Freedoms subject
• '-- Factor'
• Cause of some shivers
• Timidity
• Cold feet, so to speak
• Chicken's emotion?
• White knuckles' cause
• Cause of cowardice
• Funhouse reaction
• Shake in one's boots
• Cause of trembling
• Word repeated in a famous FDR quote
• Bad thing to live in
• Bully's weapon