Related Clues:

• 'Isn't that nice!'
• 'La-la' lead-in
• Exclamation before 'Look!'
• Astound
• Cry at fireworks
• Knock over
• Pleased sound
• 'That's awesome!'
• Super-duper success
• Backrub response
• 'I'm impressed!'
• ''Wow!''
• 'Rad!'
• Exclamation of admiration
• Sound of satisfaction