• (British, America) IPA: /dɪˈfʌŋkt/
  • (America) also IPA: /ˌdiˈfʌŋkt/


  1. (now rare) Deceased, dead.
    • 1599, William Shakespeare, “The Life of Henry the Fift”, in Mr. William Shakespeares Comedies, Histories, & Tragedies: Published According to the True Originall Copies (First Folio), London: Printed by Isaac Iaggard, and Ed[ward] Blount, published 1623, OCLC 606515358 ↗, [Act IV, scene i]:
      The organs, though defunct and dead before,
      Break up their drowsy grave and newly move
    • The boar, defunct, lay tripped up, near.
  2. No longer in use, inactive.
  3. (computing) Specifically, of a program: that has terminated but is still shown in the list of processes because the parent process that created it is still running and has not yet reaped it. See also zombie, zombie process.
  4. (business) No longer in business or service.
  5. (linguistics) (of a language) No longer spoken.
Synonyms Translations Translations Verb

defunct (defuncts, present participle defuncting; past and past participle defuncted)

  1. To make defunct.


  1. The dead person (referred to).
    • 1817 September, in Blackwood's Edinburgh magazine, volume 1, page 617:
      […] he saw Robert Johnston, pannel, come out of the cott-house with the fork in his hand, and pass by Alexander Fall and the deponent; heard the pannell say, he had sticked the dog, and he would stick the whelps too; whereupon the pannell run after the defunct’s son with the fork in his hand, […]
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