Related Clues:

• "Fun!"
• 'Fun!'
• Ingenious fuel, replacing source of power with nitrogen
• In no need of straightening
• With 43-Across, shipshape
• Cool, or without ice
• Cattle in good order
• Deft Jayawardene attacks covers
• 'Awesomesauce'
• No longer cluttered
• Orderly, tidy
• Tidy way to serve whisky?
• 'Looks fun!'
• 'Oh, that's fun!'
• 'Good stuff!'