Related Clues:

• Sound heard in a movie theater
• Library warning
• Whisperer's reproof
• Sound of silence?
• ''Zip it!''
• 'You're scaring the fish, dude!'
• Librarian's reminder
• 'Don't let them hear us!'
• Volume control?
• 'Stop talking!'
• "Too noisy!"
• Audible silencer
• Peremptory signal
• Quiet "Quiet!"
• "That's enough from you!"