Related Clues:

• 'Be still!'
• Library sound
• 'That's enough!'
• 'Stop your gabbin'!'
• Silence
• Surprise party admonition
• Theater admonition
• Be quiet
• Library order
• When doubled, confidential
• The sound of ''Silence!''
• 'Quiet, please!'
• Librarian's warning
• Soothe
• ''Put a lid on it!''