Related Clues:

• Freeze
• Stiffen
• Clench
• Need a massage
• Show nervousness
• Tighten
• Get rigid
• Betray nervousness
• Show nerves, in a way
• Become nervous
• Can't relax when the grammar is informed on
• React to a bump in the night
• Develop stage fright, say
• React to stage fright, maybe
• Stiffen through nervousness