Related Clues:

• 'Excellent!' in the '80s
• "Wicked!"
• "Coolio"
• "Groovy!"
• "Cool, dude!"
• "Coolio!"
• Geiger counter unit
• "Groovy," in the '80s
• “Far out!” in dated slang
• Unit akin to the roentgen
• "Super cool"
• 'Stellar!'
• "Sick!"
• "Kewl!"
• "Cool, man"