Related Clues:

• Making the mouth pucker, say
• Feeling gloomy
• Needing a 53-Across
• Needing a lift?
• Turn rancid
• Like a crab apple
• Chapfallen
• '___ but true'
• Whiskey go-with
• Relentlessly gloomy
• Downhearted
• 'Such a pity'
• Whisky concoction
• Like a sourpuss
• Bummed, so to speak