Related Clues:

• X-ray spec?
• 'Lovely!,' in dated slang
• Kin of "Swell!"
• Skateboard movie exclamation
• Old-fashioned "Cool!"
• "That's so cool!"
• Like, totally awesome
• 'Cool beans!'
• ''Oh, cool!''
• Sarcastic expression of enthusiasm
• 'Super-duper!'
• "Awesome!" '80s-style
• Atomic-energy unit
• 'Outstanding, man!'
• Def