Ancient
Extinct
Extinct adjective - No longer existing.
Ancient and extinct are semantically related in preceding topic. Sometimes you can use "Ancient" instead an adjective "Extinct".
Nearby Word: extinction
Mutual synonyms
Both words in one sentence
- Lost Superweapon: The ancient civilizations of the galaxy had a penchant for building superweapons, then going extinct (or going elsewhere).
Source: Literature / Humanx Commonwealth -
Their world-spanning civilization is gone, their ancient culture almost completely extinct.
Source: Enslaved Elves -
Banks' Consider Phlebas has a Planet of the Dead, on which has ancient, subterranean three-story miles-long trains that were used as mobile command centers by the extinct builders.
Source: Cool Train
Cite this Source
Extinct and Ancient. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/ancient/extinct
Ancient & Extinct. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/ancient/extinct>.
Extinct or Ancient. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/ancient/extinct.
Google Ngram Viewer shows how "ancient" and "extinct" have occurred on timeline