Related Clues:

• Meas. equal to 180°/pi
• Fantastic in the ’50s
• “Keen!”
• 'Sweet' in the 1950s
• Super keen
• 'Way cool, dude!'
• "Way cool, dude!"
• 'Cool!' in old slang
• 'That's rad!'
• “Way cool!”
• 'I like it'
• "I like it"
• 'Sweeeeet!'
• 'Excellent!' in the '80s
• 'Totally rad!'