Related Clues:

• Request from an ed.
• Knock the socks off
• 'That's amazing!'
• Astound
• Polite encl.
• Knock over
• Elysium
• Super-duper success
• 'I'm impressed!'
• ''Amazing!''
• 'Impressive!'
• Knock 'em dead
• Freelancer's encl.
• ''I'm impressed!''
• Postpaid enc.