Related Clues:

• ''Yikes!''
• 'Rad!'
• ''Great!''
• ''Peachy-keen!''
• Way cool
• 'Nifty!'
• "Cool!" old-style
• ''Far out!''
• "Yikes!"
• 'Amazing!'
• 'Way cool!'
• ''Peachy!''
• ''Keen!''
• Far out
• ''Groovy!''