Related Clues:

• 'Cool'
• Undeni-ably
• Last word of 'Ulysses'
• Of course
• Unit of 100 ergs per gram
• Word of approval
• 'Out of sight!'
• Good, at the beach
• 'Terrif!'
• Word of acceptance
• Agreeable response
• "Count me in!"
• "Far out!" to a physicist?
• 'Totally tubular!'
• "Agreed!"