Related Clues:

• The death of the party?
• Tiresome sort
• Swiss cheese feature
• Boring result
• Wearisome one
• Doughnut's center
• Flaw, as in a theory
• Serious flaw
• Try one's patience
• Dull speaker
• Negative space
• Pain at a party
• Moth's calling card
• Froot Loops feature
• Needle feature