Related Clues:

• Comment before 'I don't know'
• Major Hoople's outburst, in old comics
• Knock the socks off
• 'That's amazing!'
• Opposite of 1-Down
• 'Hold on there!'
• Antiquated outburst
• Quaint outburst
• Astound
• Knock over
• Super-duper success
• '___,' said Tom haltingly
• 'Hold it, buster!'
• Cry of shock
• 'I'm impressed!'