Related Clues:

• Marvelous, informally
• "Rad!"
• "Sweet!"
• Straight at the bar
• Groovy!
• Well-executed
• "Awesome!"
• Sans rocks
• "Outta sight!"
• Crestless wave
• "Groovy!"
• Nifty, in the '50s
• Drink order
• 'Gnarly!'
• Spick-and-span