Related Clues:

• Exclamation from Dogbert
• Interrupter's word
• "Yuck!"
• Scary sound
• Audience put-down
• Disparaging remark
• Show dissatisfaction
• Halloween sound
• Attention getter
• Greet the villain appropriately
• Cousin of "psst!"
• 'Don't forget about me'
• Humbug
• Derisive exclamation
• 'What rubbish!'