Related Clues:

• "Rad!"
• "Sweet!"
• 'Thumbs up' response
• Groovy!
• "Awesome!"
• "Outta sight!"
• Crestless wave
• "Groovy!"
• Nifty, in the '50s
• "No problemo!"
• In perfect condition
• "Wow!"
• In good order
• 'Peachy!'
• 'Sounds swell!'