Related Clues:

• 'Peachy keen!'
• Dated expression of appreciation
• "Swell"
• Surpassingly good
• Inspiring fear
• Tenant tender
• Car part, slangily
• "Great!"
• 'Way cool, man!'
• Badass
• Old-fashioned "cool"
• "Peachy keen!"
• Physicist's measure
• 'That's cool!'
• "Really cool!"