Defunct
Defunct adjective - No longer existing.
Usage example: a stack of brochures and a few faded placards are all that remain of the defunct organization
Extinct
Extinct adjective - No longer existing.
Usage example: a few overgrown ruins are all that remain of that once mighty but now extinct civilization
Defunct is a synonym for extinct in dead topic. You can use "Defunct" instead an adjective "Extinct", if it concerns topics such as vanished, live, property. obsolete substitute
Nearby Word: extinction
Mutual synonyms
Both words in one sentence
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Weird n' Wild Creatures, a now-defunct series of children's fact & trading cards that focused on living, extinct & mythical creatures and ran from 2003-2006, zig-zagged this trope in its Monsters of the Past category.
Source: Stock Dinosaurs
Cite this Source
Extinct and Defunct. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/defunct/extinct
Defunct & Extinct. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/defunct/extinct>.
Extinct or Defunct. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/defunct/extinct.
Google Ngram Viewer shows how "defunct" and "extinct" have occurred on timeline