Related Clues:

• 'Hurray!'
• Stadium cheer
• Sound of disapproval
• 'Well done!'
• Surf's sound
• Greeting for the villain
• Cheerleader's cheer
• Engine sound
• Unwanted noise
• Fan noise
• Crowd sound
• Halloween greeting
• It may give you a good start
• 'Yay!'
• 'Yay, team!'