Extinct
Extinct adjective - No longer existing.
Usage example: a few overgrown ruins are all that remain of that once mighty but now extinct civilization
Nonexistent and extinct are semantically related In some cases you can use "Nonexistent" instead an adjective "Extinct".
Nearby Word: extinction
Nonexistent
Nonexistent adjective - Not present or in evidence.
Usage example: our perennially nonexistent computer tech is, once again, not here today
Extinct and nonexistent are semantically related in fictional topic. You can use "Extinct" instead an adjective "Nonexistent".
Mutual synonyms
Related pairs
Both words in one sentence
- Aside from cranes and the extinct terror birds, the loosely-defined order Gruiformes is essentially nonexistent in fiction (things like rails, mesites and kagu being just as elusive in fiction as in real life).
Source: Small Taxonomy Pools
Cite this Source
Nonexistent and Extinct. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/extinct/nonexistent
Extinct & Nonexistent. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/extinct/nonexistent>.
Nonexistent or Extinct. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/extinct/nonexistent.
Google Ngram Viewer shows how "extinct" and "nonexistent" have occurred on timeline