Related Clues:

• Just plain dull
• Uninteresting, informally
• Interesting? No
• Contemptuous call
• "Humbug!" lead-in
• Quiet playwright? Don’t make me laugh!
• Elevated part of the Taj Mahal building is as dull as dishwater
• Interjection from Scrooge
• Securing hospital after end of clean-up, understood scornful reaction
• Scornful snort
• Dickensian disapproval
• Crank's cry
• When tripled, 'and so on and so forth'
• 'How dull'
• "How dull"