Related Clues:

• Nifty
• Straight in a snifter
• 'Way cool!'
• Undiluted, as whiskey
• Litter-free
• Clutter-free
• Natty
• Cool!
• Unadulterated
• Unmixed, to a mixologist
• 'Super!'
• Kempt
• With no ice
• Ordered
• "Sweet!"