Related Clues:

• Knock the socks off
• 'That's amazing!'
• 'Hold on there!'
• Astound
• Knock over
• Super-duper success
• '___,' said Tom haltingly
• 'Hold it, buster!'
• 'I'm impressed!'
• 'Hold your horses!'
• 'Hold it right there!'
• ''Amazing!''
• 'Impressive!'
• Knock 'em dead
• ''I'm impressed!''