Related Clues:

• 'Yahoo!'
• ''Nifty!''
• 'Peachy keen!'
• "Swell"
• 'Way cool, man!'
• Old-fashioned "cool"
• "Peachy keen!"
• 'That's cool!'
• "Really cool!"
• "That's cool!"
• 'How cool!'
• 'Wowza!'
• Old-fashioned 'Sweet!'
• 'That's swell!'
• "Far out!"