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
These individuals may be dealing with tooth loss due to accidents, sports injuries, previously failed dental work, or advanced decay. Matthew Kayser, USA Today, 18 July 2025 And wood decay fungi help create wooded habitats for birds, mammals and plant seedlings. Aishwarya Veerabahu, The Conversation, 16 July 2025
Verb
All of this allows Lithgow and Rush to take this decaying senior rivalry to the heights, even veering into campiness as Lithgow stages a musical performance of a children’s song with Jenny as his partner. Pete Hammond, Deadline, 6 Mar. 2025 Each probe is powered by three radioisotope thermoelectric generators (RTGs) fueled by decaying plutonium-238. Andrew Paul, Popular Science, 5 Mar. 2025 See All Example Sentences for decay
Recent Examples of Synonyms for decay
Noun
  • Perry confirmed the system’s deterioration at the council’s May 28 meeting.
    Miami Herald, Miami Herald, 9 July 2025
  • Where the severity of deterioration requires replacement of a distinctive feature, the new feature shall match the old in design, color, texture, and other visual qualities and, where possible, materials.
    Kansas City Star, Kansas City Star, 9 July 2025
Verb
  • Food waste after a party or outdoor snacking session can begin to rot and smell, which won’t be pleasant for you or your neighbors.
    Hallie Milstein, Southern Living, 14 July 2025
  • This vertical trellis reduces the likelihood of rotting, keeps produce away from certain garden pests, and can even increase sun exposure.
    Stephanie Osmanski, Better Homes & Gardens, 9 July 2025
Verb
  • While the fintech company presents a mixed investment profile with strong balance sheet metrics offset by deteriorating growth and profitability challenges, the index inclusion provides near-term support for a stock that has demonstrated extreme volatility lately.
    Trefis Team, Forbes.com, 21 July 2025
  • The rallies are borne of a deep dissatisfaction with the state of the economy, the deteriorating quality of public services, the administration’s overzealous approach to taxation, and police brutality.
    Ken Opalo, semafor.com, 21 July 2025
Verb
  • The brand recommends avoiding dabbing or blotting after applying the spray, as this can cause the fragrance to break down and fade.
    Jennifer Hussein, Allure, 15 July 2025
  • The celestial trio will remain close to each other throughout the night, with Saturn and Neptune eventually fading from sight in the southern sky when the sun rises on July 16.
    Anthony Wood, Space.com, 15 July 2025
Verb
  • An American man who vanished weeks ago in Turks and Caicos is still presumed missing, despite the fact that a decomposing male body was found in the island paradise 10 days ago.
    Peter D'Abrosca, FOXNews.com, 16 July 2025
  • What then starts is a roughly 30-day process where the body naturally decomposes and becomes nutrient-rich dirt.
    Alex Derosier, Twin Cities, 16 July 2025
Verb
  • The school plans to kick off the upcoming high school football season with the new seating, which replaced crumbling concrete bleachers that were estimated at roughly 50 years old.
    Katie Nixon, The Tennessean, 25 July 2025
  • Gran Sasso National Park has trails that weave through medieval villages, crumbling castles, and valleys where wild horses still roam.
    Travel + Leisure Editors, Travel + Leisure, 23 July 2025
Verb
  • This weakens their ability to educate, create, and grow.
    Miguel Cardona, Time, 21 July 2025
  • This could help verify recent findings from the Dark Energy Spectroscopic Instrument (DESI) that suggest this strange force is actually weakening over time.
    Robert Lea, Space.com, 20 July 2025
Verb
  • After that group disintegrated, the pair linked up with the guitarist and drummer of another band, Mythology — Iommi and Bill Ward — in late 1968 and formed a sextet called the Polka Tulk Blues Band.
    Kory Grow, Rolling Stone, 22 July 2025
  • Substantial, but not so much so that the bun will disintegrate from rivers of juice.
    Li Goldstein, Bon Appetit Magazine, 14 July 2025

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Cite this Entry

“Decay.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/decay. Accessed 29 Jul. 2025.

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