Related Clues:

• 'Will ya look at that!'
• 'Amazing!'
• 'Way cool!'
• Undiluted, as whiskey
• Litter-free
• 'Excellent!'
• ''Impressive!''
• Daunting
• Expression of surprise
• Clutter-free
• With 60-Down, ''Wow!''
• Natty
• Cool!
• Unadulterated
• La-la intro