Related Clues:

• Grouches
• Don't invite them!
• Party poopers
• Party-poopers
• Spoilsports
• They spoil the enjoyment of others
• Fun inhibitors
• Get rid of Felicity's party poopers
• Killjoys
• Wet blankets, figuratively
• Those denying pleasure to others
• Baby's left with small dogs in the manger