defunct
Americanadjective
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no longer in effect or use; not operating or functioning.
a defunct law; a defunct organization.
-
no longer in existence; dead; extinct.
a defunct person; a defunct tribe of Indians.
noun
adjective
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no longer living; dead or extinct
-
no longer operative or valid
Other Word Forms
Derived Forms
Etymology
Origin of defunct
1540–50; < Latin dēfunctus discharged, dead (past participle of dēfungī ), equivalent to dē- de- + functus performed; see function
Explanation
Defunct describes something that used to exist, but is now gone. A magazine that no longer publishes, like Sassy, the girl-power mag from the '90s, is defunct, for example. Although defunct comes from the Latin word defunctus meaning "dead," it's not usually used to describe a person who's no longer with us, but rather institutions, projects, companies and political parties — you know, the boring stuff. Keep digging and you'll find that defunctus comes from defungi, meaning, "to finish," which is closer to how it's used today. Defunct can also refer to a rule or law that's no longer used or has become inactive, like prohibition.
Vocabulary lists containing defunct
300 Most Difficult "SAT" Words
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Grade 9, List 2
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The Lightning Thief
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
There were separate concerns raised in the process about potential commercial conflicts of interest arising because of clients of Lord Mandelson's now defunct consulting firm Global Counsel.
From BBC • Jun. 1, 2026
Now, customers of the defunct budget carrier are mourning the sub-$100 plane ticket that has virtually disappeared.
From MarketWatch • May 6, 2026
That would have been a much worse 1.44 percentage point gap if defunct funds had been counted.
From The Wall Street Journal • Apr. 13, 2026
While it’s defunct now, CosMc’s helped McDonald’s gain insights into what resonates with customers and what doesn’t.
From Barron's • Apr. 13, 2026
I see the defunct sign dismantled and leaning against the side, almost obscured by overgrown weeds.
From "The Adoration of Jenna Fox" by Mary E. Pearson
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
