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90s Slang You Should Know


[thwak] /θwæk/
verb (used with object)
to strike or beat vigorously with something flat; whack.
a sharp blow with something flat.
Origin of thwack
First recorded in 1520-30; imitative
Related forms
thwacker, noun
outthwack, verb (used with object)
unthwacked, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for thwack
Historical Examples
  • A dense cloud of dust rises over them, and through the dim obscurity one hears the ceaseless sound of the thwack!

  • She struck one plank a thwack with the small axe she carried in her hand.

    Green Eyes Roy J. Snell
  • Geddie leaped high and caught the roll with a sounding "thwack."

  • Then, above the murmur from the temple, he heard a sound in the corridor—a thwack.

    Caravans By Night Harry Hervey
  • A thwack upon his shoulders, almost as loud as that of the peel an hour before, sent him half out of bed.

    Pippin; A Wandering Flame Laura E. Richards
  • He was stronger than the prince, otherwise there wouldn't have been a table to thwack.

    The Princess Elopes Harold MacGrath
  • After a few passes Robin feinted, and, catching the other unawares, dealt him a thwack with the flat of his blade.

    Robin Hood Paul Creswick
  • Meanwhile, Ben sweeps on like the wind, hearkening even in his haste for the welcome "thwack, thwack" of his father's axe.

  • thwack fell the broom, and, releasing Joan, the man sought to protect his head with his arms.

    The Golden Woman Ridgwell Cullum
  • Blow upon blow, thwack upon thwack—they fought hand to hand until black rock and bulrush were all gone.

    The Indian Fairy Book Cornelius Mathews
British Dictionary definitions for thwack


to beat, hit, or flog, esp with something flat
  1. a blow with something flat
  2. the sound made by it
an exclamation imitative of this sound
Derived Forms
thwacker, noun
Word Origin
C16: 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
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Word Origin and History for thwack

"to hit hard with a stick," 1520s, of echoic origin. Related: Thwacked; thwacking. The noun is recorded from 1580s.

Online Etymology Dictionary, © 2010 Douglas Harper
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