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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

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 weather is humid and in some areas, there is already a strong smell of decay, raising fears of a growing public health crisis. Fernando Narro Roman, NPR, 28 June 2026 At age 11, my favorite Broadway show was Follies – a classic preteen tale about the decay of female beauty and fading fame within an unscrupulous industry of vaudeville and burlesque. Greg Evans, Deadline, 27 June 2026
Verb
Control concentrated in one person dies with that person, decays with that person's judgment, and converts to cash the day that person takes a hard enough offer. Kyle Westaway, Forbes.com, 1 July 2026 Like Perseverance and Curiosity, the test rover is powered by a radioisotope thermoelectric generator (RTG), which converts heat from naturally decaying radioactive material into electricity. Josh Dinner, Space.com, 30 June 2026 See All Example Sentences for decay
Recent Examples of Synonyms for decay
Noun
  • But nothing competes with the painful deterioration of her sight after contracting scarlet fever.
    Ryan Coleman, Entertainment Weekly, 3 July 2026
  • In addition, city officials can now require owners to install security measures to help protect vacant buildings from further deterioration or trespassing.
    Brian Maass, CBS News, 2 July 2026
Noun
  • Authorities also found numerous dead animals in advanced stages of decomposition, including hundreds of chickens that investigators said had been discarded in bags and fed to the dogs, according to The Straits Times and The Standard.
    Moná Thomas, PEOPLE, 2 July 2026
  • Investigators also found additional remains in advanced stages of decomposition, the sheriff’s office said.
    ABC News, ABC News, 28 June 2026
Verb
  • In his inital letter, Lehmkuhl agreed that there is an urgent need to clear debris and address the persistent odor of millions of pounds of rotting food at the site.
    Jasmine Mendez Follow, Los Angeles Times, 4 July 2026
  • Applying mulch directly against plant stems traps moisture, leading to rotting and other issues.
    Lauren Landers, Better Homes & Gardens, 3 July 2026
Verb
  • They can also be used for de-aging characters, creating performances in different languages, or preserving the voice or likeness of an actor whose health is deteriorating, as was the case with CAA client Eric Dane.
    Joy Press, Vanity Fair, 6 July 2026
  • Though concrete is a durable surface, concrete driveway repair is needed when the surface deteriorates and develops cracks over the years.
    Caitlin Sole, Better Homes & Gardens, 6 July 2026
Verb
  • But rental business owners like Zhao observed that the rental prices have begun to slide as novelty surrounding these stunt-performing androids fades.
    John Liu, CNN Money, 30 June 2026
  • The combination of hyaluronic and azelaic acid does wonders to fade dark spots, soothe redness, and deeply hydrate.
    Olivia Dubyak, InStyle, 30 June 2026
Noun
  • Press freedoms across Africa are already fragile, with most nations ranking in the lower half of an influential press freedoms index, while numerous recent coups have contributed to a weakening of democratic norms in parts of the continent.
    Jenny Vaughan, semafor.com, 29 June 2026
  • One of the most significant changes during Hill’s tenure was the weakening of structures designed to elevate teacher concerns to district leadership, Oreskovic said.
    Nora O'Neill, Charlotte Observer, 19 June 2026
Verb
  • The Yolo County Central Landfill will build a new system that will convert methane from decomposing waste into renewable natural gas, the county announced Tuesday.
    Daniel Lempres, Sacbee.com, 30 June 2026
  • The ocean becomes a creamy expanse splotched with brown mats of decomposing algae, according to photos shared by Abrams.
    Bill Kearney, Sun Sentinel, 28 June 2026
Verb
  • Jan Paul van Hecke of the Netherlands has been involved in two scraps already, the latest when he was hit while going for a header and crumbled, perhaps exaggerating a tad, after Morocco's Azzedine Ounahi challenged the header, as well.
    Andrew Greif, NBC news, 30 June 2026
  • Survivors say that doors to the facility were locked and that migrants were left to die inside crumbling walls.
    Kate Linthicum, Los Angeles Times, 30 June 2026

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Cite this Entry

“Decay.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/decay. Accessed 7 Jul. 2026.

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