the world > physical sensation > hearing and noise > degree, kind, or quality of sound > non-resonance > [adverb] > non-resonant impact sound > thud (5)
With a heavy fall or dull thud.
The verb stem used adverbially With a flump.
As interjection or adverb: With a thud.
With, or as with, a plonk; directly, squarely; abruptly. (Also reduplicated.)