Related Clues:

• "Far out, man!"
• 'Hey, that's cool!'
• "Hey, that's cool!"
• Retro ''Awesome!''
• Nuclear plant unit
• 'Coolness!'
• Groovy, updated
• "Awesome!" in the '80s
• Engine cooler, slangily
• 'That's really cool!'
• "Awesome!" of the '80s
• 'Sick'
• 'Boss!'
• Cool, in the '90s
• 'Totally cool, man!'