thumping(noun, adjective, verb) adjective1. (used informally) very large- a thumping lossSimilar word(s): big, large, banging, humongous, walloping, whopping noun1. a heavy dull sound (as made by impact of heavy objects)Similar word(s): clump, clunk, thud, thumpDefinition categories: event, sound verb1. present participle of thump