Related Clues:

• 'Way cool, man!'
• Badass
• Old-fashioned "cool"
• "Peachy keen!"
• Physicist's measure
• 'That's cool!'
• "Really cool!"
• "That's cool!"
• Unit at a reactor
• 'How cool!'
• 'Wowza!'
• Old-fashioned 'Sweet!'
• 'That's swell!'
• "Far out!"
• ''Sweet!''