decay 1 of 2

Definition of decaynext
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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

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
The universe, however, consists of matter but almost no antimatter, which exists naturally only in small quantities, created by radioactive decay and cosmic ray collisions. Jacopo Prisco, CNN Money, 27 Mar. 2026 The sediment close to their roots can be as sweet as fruit nectars or tree sap, although to human tongues the mud tastes overwhelmingly of salt and decay. David George Haskell, Big Think, 27 Mar. 2026
Verb
In addition to the decaying physical structure, Richards highlighted a decrease in correction officer staffing levels such that people inside do not feel safe. Steve Zeidman, New York Daily News, 2 Apr. 2026 Walked with us through rundown streets and into decaying alleyways. Théoden Janes, Charlotte Observer, 1 Apr. 2026 See All Example Sentences for decay
Recent Examples of Synonyms for decay
Noun
  • Prosecutors said the owners were given multiple warnings about the roof's deterioration and were even urged to cancel the concert that was going on at the time of the collapse.
    Jennifer Bisram, CBS News, 8 Apr. 2026
  • In addition, physical deterioration has become a concern over time.
    Sujita Sinha, Interesting Engineering, 6 Apr. 2026
Noun
  • The system begins by preprocessing battery data using a technique called complete ensemble empirical mode decomposition with adaptive noise.
    Neetika Walter, Interesting Engineering, 24 Mar. 2026
  • In addition, warmer water temperatures and the decomposition of organic material can promote bacterial growth.
    Kelly McGreal, FOXNews.com, 19 Mar. 2026
Verb
  • Metal stakes resist rot but can rust if not stored properly.
    Jessica Safavimehr, Southern Living, 1 Apr. 2026
  • Routine gutter cleaning prevents water damage to your roof and siding, protects your foundation from pooling water, avoids mold, mildew and rot, and keeps pests like insects and rodents from nesting in the debris.
    Lauren Jarvis-Gibson, Kansas City Star, 31 Mar. 2026
Verb
  • Despite his professional success, his home life deteriorates, particularly his relationship with his daughter.
    Kevin Jacobsen, Entertainment Weekly, 9 Apr. 2026
  • The lawsuit says the hospital did not tell his family that Hylton’s condition had deteriorated and that he had been transferred to the ICU without a doctor on-site.
    Jen Christensen, CNN Money, 9 Apr. 2026
Verb
  • When momentum faded, the stock rolled over, and those same lines flipped to resistance on the way down.
    Frank Cappelleri, CNBC, 10 Apr. 2026
  • The letters are printed on the sides of the keys rather than the top, which prevents fading.
    BestReviews, Mercury News, 10 Apr. 2026
Noun
  • On Saturday, storm chances increase, especially west of DFW, but some weakening is possible as storms move east.
    Nelly Carreno, CBS News, 8 Apr. 2026
  • The new business frontiers do not indicate a weakening in the AP’s standards of providing fast, accurate, non-biased news, leaders said.
    David Bauder, Fortune, 6 Apr. 2026
Verb
  • Drainage problems and decomposing leaves and mulch will quickly attract them.
    Brandee Gruener, Southern Living, 10 Apr. 2026
  • Clements said the mistaken identification may have happened because the creature decomposed and lost its telltale shell before it was fossilized, complicating identification.
    ABC News, ABC News, 9 Apr. 2026
Verb
  • From crumbling stacks of CDs — featuring Prince, Paul Simon, Kylie Minogue, and PJ Harvey — to old jewelry boxes, and even her beloved first copy of Brothers Grimm’s Fairytale, every item held countless memories that helped Humberstone shape her second album Cruel World.
    Maya Georgi, Rolling Stone, 6 Apr. 2026
  • If the dinosaurs and woolly mammoths that once roamed the Earth had since crumbled into dust, then what hope was there for humanity?
    Kathryn Hughes, The New York Review of Books, 4 Apr. 2026

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Cite this Entry

“Decay.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/decay. Accessed 12 Apr. 2026.

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