Related Clues:

• Judgmental sound
• When repeated, 'Oh you're a bad boy...'
• 'That wasn't nice'
• Terse scolding
• "How disappointing!"
• 'That's bad!'
• Disappointed sound
• Vowelless reproach
• What might be heard with a head shake
• Vowelless interjection
• 'Bad!' sound
• Reaction to a 71-Across
• It might accompany the wag of a finger
• 'Shameful!'
• [That was bad of you!]