decay 1 of 2

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as in decomposition
the process by which dead organic matter separates into simpler substances the cycle by which the decay of dead plants on the forest floor provides soil and nutrients for the next generation of plants

Synonyms & Similar Words

Antonyms & Near Antonyms

decay

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verb

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Synonym Chooser

How is the word decay different from other verbs like it?

Some common synonyms of decay are decompose, putrefy, rot, and spoil. While all these words mean "to undergo destructive dissolution," decay implies a slow change from a state of soundness or perfection.

a decaying mansion

Where would decompose be a reasonable alternative to decay?

While the synonyms decompose and decay are close in meaning, decompose stresses a breaking down by chemical change and when applied to organic matter a corruption.

the strong odor of decomposing vegetation

In what contexts can putrefy take the place of decay?

In some situations, the words putrefy and decay are roughly equivalent. However, putrefy implies the rotting of animal matter and offensiveness to sight and smell.

corpses putrefying on the battlefield

How are the words rot and decompose related as synonyms of decay?

Rot is a close synonym of decompose and often connotes foulness.

fruit was left to rot in warehouses

When is spoil a more appropriate choice than decay?

The meanings of spoil and decay largely overlap; however, spoil applies chiefly to the decomposition of foods.

keep the ham from spoiling

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of decay
Noun
Community water fluoridation adjusts the amount of fluoride in drinking water to a level that will prevent tooth decay. David Faris, Newsweek, 27 Feb. 2025 Bogs are low-oxygen environments and prevent decay, and chemicals like tannins — used in tanning leather — preserve even the organic tissues from human remains, according to Britannica. Irene Wright, Miami Herald, 21 Feb. 2025
Verb
Pivet has also developed the Self-Cycle case, that according to the company is bio-available, which means when you are done with the case and aren't able to recycle, the naturally consumable plastic will decay in landfills. Good Housekeeping, 22 Aug. 2022 Without relative economic strength, the sphere’s political and military strength will decay over time. George Bradt, Forbes, 7 June 2022 See All Example Sentences for decay
Recent Examples of Synonyms for decay
Noun
  • Kahle, who early on recognized the ephemeral nature of the web, said the rapid deterioration of the living web is a serious threat to historical preservation.
    Emma Bowman, NPR, 23 Mar. 2025
  • Of course, however, a severe deterioration in the U.S. economy would have global repercussions.
    Sarah Min, CNBC, 20 Mar. 2025
Verb
  • The story revolves around a town where the inhabitants have been mysteriously disappearing and rumours abound that there are ghosts under the lake eating human heads and leaving the rotting corpses floating on the water’s surface.
    Liz Shackleton, Deadline, 16 Mar. 2025
  • The window company used this preservative to prevent wood rot in both the window frames and the sashes.
    Tim Carter, Hartford Courant, 15 Mar. 2025
Verb
  • Seeing Postecoglou snap at such a mild remark demonstrated how much the Australian’s relationship with the fans has deteriorated.
    Zak Garner-Purkis, Forbes, 23 Mar. 2025
  • Wood shelves in dry food storage area were deteriorated.
    Camila Pedrosa, Sacramento Bee, 21 Mar. 2025
Verb
  • The possible explanatory layers overwhelm, and so there’s an honesty to how the series opts to focus on the devastation instead, fading out on the image of the Miller family torn apart and Eddie breaking down on Jamie’s bed.
    Nicholas Quah, Vulture, 19 Mar. 2025
  • Now, Trump's personal and fading legal troubles—combined with his brash policies concerning issues like immigration, executive power, and corporate regulations—are once again driving people to law school.
    Dan Perry, Newsweek, 18 Mar. 2025
Verb
  • Crimping is the process of severing a crop at the base and laying it over to create a decomposing thatch/mulch layer for the garden without disturbing the soil.
    Anthony Reardon, Kansas City Star, 21 Mar. 2025
  • Even after your trash can is emptied, the bacteria and decomposing debris can be left behind in trace amounts, which causes the odors to remain.
    Kamron Sanders, Better Homes & Gardens, 18 Mar. 2025
Verb
  • Marcos appeared on nationwide television around midnight shortly after Duterte was flown out and denied the allegations of the vice president, who has had a bitter falling out with him after their whirlwind political alliance as running mates in the 2022 elections crumbled.
    Jim Gomez, Los Angeles Times, 13 Mar. 2025
  • Cloistered within the dense Mediterranean scrub lay crumbling remnants of bunkers and barracks.
    Gina DeCaprio Vercesi, Travel + Leisure, 13 Mar. 2025
Verb
  • His health weakened by overwork and physical ailments, McCombs spent much of the last months of his life under medical care.
    arkansasonline.com, arkansasonline.com, 22 Mar. 2025
  • The doctor added that recovery would best continue away from the hospital, where exposure to viruses risks weakening the Holy Father's condition.
    Danielle Wallace, Fox News, 22 Mar. 2025
Verb
  • Players like Bobby Bonilla, George Foster, Vince Coleman, Jason Bay, Justin Verlander, Kaz Matsui, and others, came to Queens with high hopes that eventually disintegrated.
    Bob Raissman, New York Daily News, 15 Mar. 2025
  • The top courses of the concrete block had disintegrated, and were nothing more than sand and small stones.
    Tim Carter, Hartford Courant, 15 Mar. 2025

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Cite this Entry

“Decay.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/decay. Accessed 28 Mar. 2025.

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