Related Clues:

• 'Far out, man'
• 'Killer, dude!'
• "Terrif!"
• "Super!"
• "Gee!"
• ''Neat-o!''
• Totally dope
• ''Terrific,'' in '80s slang
• Awesome, in surf talk
• Totally cool, in '90s slang
• Unit of radiation
• 'Kewl!'
• Totally cool
• ''That's super!''
• ''Fantabulous!'' in the '50s