Related Clues:

• "Oh wow!"
• Reaction to fireworks
• Common answer to 'How are you doing?'
• "Wow!"
• Delighted exclamation
• 'Pretty good!'
• "Nicely done!"
• Reasonable
• Audible admiration
• Aah partner
• Pretty good
• "I'm impressed!"
• Crowd's gasp
• Sound of amazement
• 'Isn't that pretty!'