Related Clues:

• Cause ennui
• Demonstrate boredom
• Haul
• Word with race and queen
• Yawn inducer
• [Ho-hum]
• See 34-Down
• Source of tedium
• Barrel measure
• Hint to an unexciting speaker
• Word with strip or bunt
• Race type
• Wind resistance
• Put to sleep, maybe
• Tire