Decay
Decay noun - A gradual sinking and wasting away of mind or body.
Extinction and decay are semantically related in collapse topic. In some cases you can use "Extinction" instead a noun "Decay", when it comes to topics like degradation, fading, attenuation.
Extinction
Extinction noun - The state or fact of being rendered nonexistent, physically unsound, or useless.
Decay and extinction are semantically related in degradation topic. Sometimes you can use "Decay" instead a noun "Extinction", if it concerns topics such as fading, attenuation.
Nearby Word: extinct
Mutual synonyms
Related pairs
How words are described
Both words in one sentence
- The Shaddill from The League of Peoples Verse travelled around "uplifting" deserving species by granting them wonderful gifts of sufficiently advanced technology... gifts which would destroy the species' culture, stagnate their development, and slowly drive them into decay and extinction.
Source: Abusive Precursors -
Life After People is less a condemnation of man's hubris than a scientific exposition of how everything humanity has right now will eventually decay and that there'll be little left to indicate we were ever here long after our extinction.
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Has begun to suffer a degree of Network Decay in recent years, as the programming lineup has begun to stray from its animal-centric orientation.Shows on this Network: Animal Armageddon, which is about extinction events throughout Earth's history.
Source: Creator / Animal Planet
Cite this Source
Extinction and Decay. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/decay/extinction
Decay & Extinction. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/decay/extinction>.
Extinction or Decay. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/decay/extinction.
Google Ngram Viewer shows how "decay" and "extinction" have occurred on timeline