Related Clues:

• Sours
• Goes bad, as fruit
• Becomes rancid
• Turns bad
• Languishes: slang
• Goes to the dogs
• Some whiskey drinks
• Goes bad, as milk
• Turns to compost
• Stops liking, with 'on'
• Goes to hell
• Turns in the fridge
• Crumbles
• Languishes in the lockup
• Addles