Related Clues:

• Unit of 100 ergs per gram
• Word of approval
• 'Out of sight!'
• Good, at the beach
• 'Terrif!'
• "Far out!" to a physicist?
• 'Totally tubular!'
• 'Terrific!'
• "Nifty!"
• 'Pretty amazing!'
• Incomparable
• "Amazing!"
• Bowl opening?
• Beyond compare
• A-one