Related Clues:

• 'Radical, dude!'
• ''Very cool!''
• Impressive, to teens
• Not just great
• Inspiring fear
• "Totally cool!"
• Portentous
• Really cool
• 'Like, totally cool!'
• "Totally rad!"
• Impressive and then some
• Exceptionally good
• Astonishing
• Astonishing, wonderful
• Magnificent, causing fear or wonder