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See also: Thrash



From Middle English thrasshen, a dialectal variant of thresshen, threshen (whence the modern English thresh), from Old English þrescan, from Proto-Germanic *þreskaną, whence also Old High German dreskan, Old Norse þreskja.


  • (UK) IPA(key): /θɹæʃ/
  • (file)
  • Rhymes: -æʃ


thrash (third-person singular simple present thrashes, present participle thrashing, simple past and past participle thrashed)

  1. To beat mercilessly.
    • 1979 November 30, Roger Waters, “The Happiest Days of Our Lives”, in The Wall[1]:
      But in the town it was well known, when they got home at night, their fat and psychopathic wives would thrash them within inches of their lives.
    • 2023 February 22, Howard Johnston, “Southern '313s': is the end now in sight?”, in RAIL, number 977, page 42:
      The rural Midland & Great Northern backwaters from Norfolk to Leicester closed in February 1959 before they could be used there, and thrashing them on the GN main line instead resulted in a memorably poor ride and rattling windows, caused by vibration from their engines and suspect suspension.
  2. To defeat utterly.
    • 2011 January 8, Paul Fletcher, “Stevenage 3 - 1 Newcastle”, in BBC[2]:
      Pardew made five changes to the side that thrashed West Ham 5-0 on Wednesday - with players such as James Perch and Alan Smith given the chance to underline their case for a regular starting berth.
  3. To thresh.
  4. To move about wildly or violently; to flail; to labour.
  5. (software) To extensively test a software system, giving a program various inputs and observing the behavior and outputs that result.
  6. (computing) In computer architecture, to cause or undergo poor performance of a virtual memory (or paging) system.

Derived terms[edit]


The translations below need to be checked and inserted above into the appropriate translation tables. See instructions at Wiktionary:Entry layout § Translations.


thrash (countable and uncountable, plural thrashes)

  1. (countable) A beat or blow; the sound of beating.
    • 1918, Henry Adams, The Education of Henry Adams:
      Even among friends at the dinner-table he talked as though he were denouncing them, or someone else, on a platform; he measured his phrases, built his sentences, cumulated his effects, and pounded his opponents, real or imagined. His humor was glow, like iron at dull heat; his blow was elementary, like the thrash of a whale.
    • 1934 May, Robert E. Howard, “Queen of the Black Coast”, in Weird Tales:
      As he reeled on wide-braced legs, sobbing for breath, the jungle and the moon swimming bloodily to his sight, the thrash of bat-wings was loud in his ears.
    • 2016, Clark Nida, The Titan Kiss:
      Spinning full-circle, the aircraft careered out of control. It bounced twice on the waves, each time managing to free itself from the engulfing spray with vigorous thrashes of its one good wing.
  2. (music, uncountable) thrash metal


  • (computing, software) P. J. Denning. 1968. Thrashing: Its Causes and Prevention. Proceedings AFIPS,1968 Fall Joint Computer Conference, vol. 33, pp. 915-922.




Borrowed from English thrash.


  • IPA(key): /ˈtrɛʃ/ (occasionally pronounced as [ˈθɹɛʃ])
  • Hyphenation: thrash


thrash m (uncountable)

  1. (music) thrash metal, thrash
    Synonym: thrashmetal