| consumption(decline, ruin, collapse, failing, deterioration) | |
| corrosion(decline, ruin, collapse, failing, deterioration) | |
| crack of doom(expression, idiom, end, destruction) | |
| crossing the bar(expression, idiom) | |
| crumb | |
| crumbling(noun, decline, collapse, destruction, wreck) | |
| crushing(noun, slaughter, destruction, devastation, obliteration) | |
| damage(noun, ruin, collapse, destruction, wreck) | |
| damping | |
| darkening | |
| darkness(noun, end, release, ruin, finish) | |
| death knell | |
| debt of nature(expression, idiom) | |
| decadence(decline, ruin, collapse, failing, deterioration) | |
| decimation | |
| decline(noun, collapse, deterioration, decay, downfall) | |
| decomposition(decline, collapse, overthrow, deterioration, termination) | |
| decrease(decline, ruin, collapse, failing, deterioration) | |
| decrepitude(decline, ruin, collapse, failing, deterioration) | |
| defunct |
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| APA | Smart Define. (2015). extinction thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/extinction/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "extinction thesaurus" https://smartdefine.org/extinction/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, extinction thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/extinction/thesaurus/synonyms>. |
| MLA | Smart Define. "extinction thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/extinction/thesaurus/synonyms> |