[n] a heavy dull sound (as made by impact of heavy objects)
[adj] (used informally) very large; "a thumping loss"
[adj] 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"
Synonyms
big, clump, clunk, dull, humongous, large, nonresonant, thud, thudding, thump, unreverberant, walloping, whopping