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wham

[hwam, wam]
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noun
  1. a loud sound produced by an explosion or sharp impact: the wham of a pile driver.
  2. a forcible impact.
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interjection
  1. (used as an exclamation suggestive of a loud slam, blow, or the like).
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verb (used with or without object), whammed, wham·ming.
  1. to hit or make a forcible impact, especially one producing a loud sound: The boat whammed into the dock. He whammed the door shut.
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adverb
  1. Also whammo. abruptly; with startling suddenness: The car ran wham up against the building.
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Origin of wham

First recorded in 1730–40; imitative
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for whams

wham

noun
  1. a forceful blow or impact or the sound produced by such a blow or impact
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interjection
  1. an exclamation imitative of this sound
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verb whams, whamming or whammed
  1. to strike or cause to strike with great force
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Word Origin

C20: of imitative origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for whams

wham

n.

"a heavy blow," 1923, of echoic origin.

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Online Etymology Dictionary, © 2010 Douglas Harper