Synonyms for Thumping (same or very similar meaning)
WordNet sense 1 (a heavy dull sound (as made by impact of heavy objects)):
clump, clunk, thud, thumpWordNet sense 2 ((used informally) very large):
humongous, walloping, whopping, bangingWordNet sense 3 (above average in size or number or quantity or magnitude or extent):
big, largeFrom the ODE community, based on WordNetadd/edit