heavy, dull blows or hits; the sounds made by something hitting hard; to hit with force.
From Old English 'thump' or similar onomatopoeia, mimicking the actual sound of a heavy blow, used since the 1600s.
The word 'thump' is onomatopoeia—it sounds like what it means—and different languages have different versions (like German 'tump' or Dutch 'tomp'), showing how humans worldwide make similar sounds for the same action.
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