Related Clues:

• Cinema admonition
• 'Button it!'
• Still
• Mollify
• 'Quiet!'
• 'Hush!'
• Muzzle
• Sound at the movies
• 'No whispering!'
• 'Not another word!'
• 'Put a lid on it!'
• Theater warning
• The sound of silence
• 'Pipe down!'
• Quiet