Related Clues:

• "Whoa!"
• Totally rad
• 'That's great!'
• Skater dude's exclamation
• Overwhelming
• 'So cool!'
• "Excellent!"
• ''Like, stupendous!''
• "That's great!"
• 'Killer, dude!'
• Kick-ass
• 'Radical, dude!'
• ''Very cool!''
• Impressive, to teens
• Inspiring fear