Possible Clues:

• Sounds of reproach
• "You oughta know better!"
• Finger wagger's comment
• 'Aren't you ashamed?!'
• 'You know better than that!'
• Schoolmarmish sound
• Reproachful warning
• "You should be ashamed!"
• “How naughty of you!”
• Area scrubbed twice in duplicated job: I disapprove!