Related Clues:

• Barrel measure
• Put to sleep, maybe
• Tire
• Resident of Dullsville
• Yawner
• Hardly the life of the party
• Hollow out
• Dullard
• Tiresome one
• Foolishly loquacious talker
• Yawn-inducing speaker
• Evoke yawns
• Induce ennui
• The death of the party?
• Tiresome sort