Related Clues:

• Eng. cooler
• Pretty cool
• Ingenious
• "Excellent!"
• ''Like, stupendous!''
• X-ray dose unit
• "That's great!"
• 'Far out, man'
• 'Killer, dude!'
• Really swell
• ''Neat-o!''
• Totally dope
• ''Terrific,'' in '80s slang
• Awesome, in surf talk
• Kick-ass