Related Clues:

• Tiresome person
• Gun barrel measurement
• Depressing circumstance
• Leave yawning
• Hint to a boring speaker
• Act that's 'contagious'
• Snoozefest
• It's contagious
• Produced, as fruit
• Betray sleepiness
• React to a bore
• [I'm bored]
• Gun measurement
• Wearisome speaker
• Uninteresting one