tv. to beat or outscore someone. : They set out to whump us, and they sure did.
n. the sound made when two flat surfaces fall together. : I heard the whump when the shed collapsed.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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Word Origin & History
whump (v.)
1897, of imitative origin. The noun is recorded from 1915.