Related Clues:

• 'That's enough out of you!'
• Restraining order?
• Silencer
• Librarian's admonishment
• "Shh!"
• Moviegoer's reprimand
• Lullaby word
• "Enough of that!"
• It'll shut you up
• It can fall over a crowd
• Breath-holding crowd reaction
• ''Zip your lip!''
• ''No talking!''
• "Quiet, you!"
• Urge to be quiet