Related Clues:

• With it, in the 50's
• 'Keen!'
• 'Totally cool!'
• 'That's awesome!'
• 'Groovy!'
• 'Swell!'
• 'I'm impressed!'
• 'Rad!'
• ''Great!''
• Informed
• ''Peachy-keen!''
• On to
• Way cool
• 'Nifty!'
• Jivey