Related Clues:

• Blow away
• Colossal
• 'Holy Toledo!'
• 'That's incredible!'
• Knock the socks off
• 'That's amazing!'
• Amazing
• Astound
• Prefix with vitamin
• Knock over
• Super-duper success
• Prefix with star or bucks
• 'I'm impressed!'
• ''Amazing!''
• 'Impressive!'