Findings:

• It is a dull existence in the shadow of great things long past.
• Region of Thud
• Thud and blunder
• thud (user)
• Thud!
• Slide, thud, whoosh, crunch, or: Catholic Rally Stage 1 Fights Back
• sickening thud
• THUD
• thud! (user)
• Dull copper wanting to shine
• dull
• Why Luggage shouldn't be of a dull colour
• Save us from the horror of dull dead trees: a marathon E2 Quest
• Dull Sword
• A slant of sun on dull brown walls
• Still and humming and glaringly dull
• If by Dull Rhymes our English must be Chain'd
• Timid virgins make dull company
• All work and no play makes Jack a dull boy

If you Log in you could create a "dull thud" node. If you don't already have an account, you can register here.