Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • transitive v. To strike or hit with a flat object; whack.
  • n. A hard blow with a flat object; a whack.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The act of thwacking; a strike or blow, especially with a flat implement.
  • n. To strike with a wet, slapping sound.
  • v. To whack or hit with flat implement.
  • v. To beat.

from the GNU version of the Collaborative International Dictionary of English

  • transitive v. To strike with something flat or heavy; to bang, or thrash: to thump.
  • transitive v. To fill to overflow.
  • n. A heavy blow with something flat or heavy; a thump.

from The Century Dictionary and Cyclopedia

  • To strike with something flat or hard; beat; bang; whack.
  • To ram down; pack.
  • n. A sharp blow with something flat or hard; a whack; a bang.
  • n. Synonyms See thump.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a hard blow with a flat object
  • v. deliver a hard blow to

Etymologies

Imitative.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From a variant (influenced by whack) of Middle English thakken ("to stroke"), from Old English þaccian ("to touch gently, stroke, tap"), from Proto-Germanic *þakwōnan (“to touch lightly”), from Proto-Indo-European *tag-, *taǵ- (“to touch”). Cognate with Old Dutch þakolōn ("to stroke"), Old Norse þykkr ("a thwack, thump, blow"), Icelandic þjökka, þjaka ("to thwack, thump, beat"), Norwegian tjåka ("to strike, beat"), Latin tangō ("touch"). More at tangent. (Wiktionary)

Examples

  • What they forgot to take into account, however, is that you do not hear the primary charge of a rifle being fired if you are more than 100 metres from it, you only hear the "thwack" or "crack" of the bullet passing overhead, followed by a MUTED primary charge thump (weapon firing).

    On Thursday, the Legg report will be published along with...

  • A good meaty "thwack" means the thrower needs to go hide for a few seconds.

    H3 quick review

  • At the last moment she turned parallel to the chukar's line of flight and hit it from behind with the solid "thwack" of a large-caliber bullet striking flesh.

    The Coffin Dancer

  • As he settled himself in the saddle for a long ride he heard the drumming of hoofs, the hollow "thwack" of chaparral against wooden stirrups, the whoop of

    Waifs and Strays Part 1

  • It's no longer the crisp "thwack" of the persimmon, or the cool "ping" of the stainless steel.

    About.com Golf

  • Nestled among a thick area of pine trees and beautiful red and purple flowers, Harrington blasted his second shot only to hear a thumping "thwack" a moment later as his ball slammed into a tree.

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  • At the last second, she twisted her blade so the flat of it hit his head with a resounding 'thwack'.

    Ultimate List

  • Mea culpa 'thwack', mea culpa 'thwack' (oo that feels good), mea culpa 'thwack'

    Army Rumour Service

  • The "thwack" of driver on ball sure to earn approval of most golf pros.

    - Latest Popular Stories, Instablogs Community

  • At the same time also that the afterpart of the vessel rose up on the breast of one billowy mountain, her forefoot in turn would come down with a resonant "thwack" into the valley intervening between this roller and the next, the buoyant old barquey dipping her bows under and giving the star-crowned maiden with golden ringlets, that did duty for her figurehead, an impromptu shower bath as she parted the indignant waves with her glistening black hull, sending them off on either hand with a contemptuous "swish" on their trying in mad desperation to leap on board, first to port and then to starboard, as the ship listed in her roll.

    The Ghost Ship A Mystery of the Sea

Comments

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  • "THIRD SERVANT: Why, here's he that was wont to thwack our general,--Caius Marcius.
    FIRST SERVANT: Why do you say, thwack our general?
    THIRD SERVANT: I do not say thwack our general; but he was always good enough for him."
    - William Shakespeare, 'The Tragedy of Coriolanus'.

    August 29, 2009

  • I love thwack too –it's in the same league as kersplat

    April 13, 2009

  • Citation on portly.

    July 25, 2008

  • i have always loved "thwack."

    January 3, 2007