[ thwak ]
See synonyms for thwack on
verb (used with object)
  1. to strike or beat vigorously with something flat; whack.

  1. a sharp blow with something flat.

Origin of thwack

First recorded in 1520–30; imitative

Other words from thwack

  • thwacker, noun
  • outthwack, verb (used with object)
  • un·thwacked, adjective

Words Nearby thwack Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use thwack in a sentence

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

  • 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
  • The Judge raised the strip of leather and brought it down with a resounding thwack across the boy's legs.

    At the Little Brown House | Ruth Alberta Brown
  • Jantje and his master turned out of the road, and soon the unmistakable thwack!

    With Steyn and De Wet | Philip Pienaar

British Dictionary definitions for thwack


/ (θwæk) /

  1. to beat, hit, or flog, esp with something flat

    • a blow with something flat

    • the sound made by it

  1. an exclamation imitative of this sound

Origin of thwack

C16: of imitative origin

Derived forms of thwack

  • thwacker, noun

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