thumping (
http://definr.com/thumping)
adj 1: not clear and resonant; sounding as if striking with or
against something relatively soft; "the dull thud";
"thudding bullets"; "thumping feet on the carpeted
stairs" [syn:
dull,
thudding]
2: (used informally) very large; "a thumping loss" [syn:
humongous,
whopping,
walloping]
n : a heavy dull sound (as made by impact of heavy objects)
[syn:
thump,
clump,
clunk,
thud]