Dead
Dead adjective - No longer living.
Usage example: I inherited this heirloom from my dead great-grandfather
Extinct is a synonym for dead in live topic. In some cases you can use "Extinct" instead the word "Dead" as an adjective or an adverb, when it comes to topics like lifeless, deceased, vanished, ceased to exist. obsolete substitute
Nearby Word: deadly
Extinct
Extinct adjective - No longer existing.
Usage example: a few overgrown ruins are all that remain of that once mighty but now extinct civilization
Dead is a synonym for extinct in vanished topic. You can use "Dead" instead the word "Extinct" as an adjective or an adverb, if it concerns topics such as live, property, state, ceased to exist. popular alternative
Nearby Word: extinction
Mutual synonyms
Both words in one sentence
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Wars broke out, some going nuclear; many species went extinct; the oceans around Antarctica are completely dead; and roughly half of humanity is dead.
Source: Anime / Neon Genesis Evangelion -
Millions are dead, the Kryptonians are extinct again, and Luthor is not only a greater Karma Houdini than ever, but General Lane is regarded as a hero.
Source: Comic Book / New Krypton -
In the sequels, he's rewritten to be a Proud Warrior Race Guy from the extinct Furyans, and the "shinejob" on his eyes was supernaturally bestowed on him by the vision of a dead Furyan woman.
Cite this Source
Extinct and Dead. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/dead/extinct
Dead & Extinct. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/dead/extinct>.
Extinct or Dead. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/dead/extinct.
Google Ngram Viewer shows how "dead" and "extinct" have occurred on timeline