1
as in decomposes
to go through decomposition
the logs decayed on the rain forest floor the atom of plutonium decayed in the test chamber
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Antonyms & Near Antonyms
2
as in deteriorates
to become worse or of less value
the restaurant's standards for food and service had decayed over the years
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Antonyms & Near Antonyms
3
as in fades
to lose bodily strength or vigor
having reached her 80s, the woman could sense that her body was decaying
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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of decays
The most common isotope, plutonium-239, is produced when the most common isotope of uranium, uranium-238, absorbs a neutron and then quickly decays to plutonium.
—
Prabhat Ranjan Mishra, Interesting Engineering, 23 Oct. 2025
The heartwood in the tree’s center decays first and makes for easy excavating.
—Madison Dapcevich, Outside, 21 Sep. 2025
This could include some sort of novel, exotic form of mass or energy, a non-standard form of dark matter or dark energy that decays or otherwise interacts, or a modification to one or more laws of physics.
—Ethan Siegel, Big Think, 2 Sep. 2025
Competitive advantage now decays in months, not years.
—Jason Wingard, Forbes.com, 29 Aug. 2025
As the emitter naturally decays, electrons (in the form of beta particles) strike the absorber.
—IEEE Spectrum, 25 Aug. 2025
So as radioactive uranium slowly decays into lead, the ratio of uranium to lead provides the age of the crystal.
—Howard Lee, ArsTechnica, 11 Aug. 2025
This technique relies on the fact that naturally occurring uranium decays over long but well-known periods of time to eventually transform into lead.
—Briana Pobiner, The Conversation, 11 Apr. 2025
The audio isn't much to listen to—just some static followed by a staticky explosive noise that decays in swirling fashion for multiple seconds.
—Nate Anderson, Ars Technica, 12 Feb. 2025
Prabhat Ranjan Mishra, Interesting Engineering, 23 Oct. 2025
The heartwood in the tree’s center decays first and makes for easy excavating.
—Madison Dapcevich, Outside, 21 Sep. 2025
This could include some sort of novel, exotic form of mass or energy, a non-standard form of dark matter or dark energy that decays or otherwise interacts, or a modification to one or more laws of physics.
—Ethan Siegel, Big Think, 2 Sep. 2025
Competitive advantage now decays in months, not years.
—Jason Wingard, Forbes.com, 29 Aug. 2025
As the emitter naturally decays, electrons (in the form of beta particles) strike the absorber.
—IEEE Spectrum, 25 Aug. 2025
So as radioactive uranium slowly decays into lead, the ratio of uranium to lead provides the age of the crystal.
—Howard Lee, ArsTechnica, 11 Aug. 2025
This technique relies on the fact that naturally occurring uranium decays over long but well-known periods of time to eventually transform into lead.
—Briana Pobiner, The Conversation, 11 Apr. 2025
The audio isn't much to listen to—just some static followed by a staticky explosive noise that decays in swirling fashion for multiple seconds.
—Nate Anderson, Ars Technica, 12 Feb. 2025
Recent Examples of Synonyms for decays
Verb
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Return nutrients back to the soil Fallen leaves and other plant debris act as a natural mulch, which slowly decomposes over the winter.—
Chris McKeown,
Cincinnati Enquirer,
18 Oct. 2025
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When leaves fall to the ground, the carbon stays in these leaves, breaks down, and decomposes and releases nutrients back into the soil that plants can take in.—
Saleen Martin,
USA Today,
14 Sep. 2025
Verb
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Exposure to such content also deteriorates her audience’s ability to form beliefs on the basis of the evidence and primes them for skepticism toward consequential matters like vaccines and medicine.—
Rafael Perez,
Oc Register,
16 Oct. 2025
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There is still plenty of long-term risk, depending on the rate at which Connor’s game deteriorates in his 30s.—
Murat Ates,
New York Times,
9 Oct. 2025
Verb
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Along with being functional, these bowls offer a modern look with an embossed texture surrounding the exterior and gradient color scheme that fades from the smallest bowl to the largest.—
Caley Sturgill,
Southern Living,
24 Oct. 2025
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But once the novelty fades, no one will care how a video was made.—
Victor Riparbelli,
Fortune,
23 Oct. 2025
Verb
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While the missile could, in theory, bypass missile defenses, each test risks radioactive fallout if the reactor disintegrates during flight or on impact.—
Kapil Kajal,
Interesting Engineering,
27 Oct. 2025
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Ethan Hawke stars as Lorenz Hart of legendary songsmiths Rodgers & Hart as the prolific partnership disintegrates to his great dismay.—
Jill Goldsmith,
Deadline,
17 Oct. 2025
Verb
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Toby’s display, overall, looks a lot nicer, but when Paul goes to take a slice of his cake from the chocolate case, the whole thing crumbles to a mess.—
Brian Moylan,
Vulture,
3 Oct. 2025
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At times, the house would break apart onstage, with the top half lifted in the air, only for YoungBoy to start aggressively rapping, standing supreme while the house crumbles around him.—
Jayson Buford,
Rolling Stone,
30 Sep. 2025
Verb
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The rising intolerance that results erodes social cohesion, undermines support for democratic norms and weakens trust in institutions.—
Andrew Rojecki,
The Conversation,
21 Oct. 2025
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Blocking them causes disruption to the cells’ energy-generating mitochondria and leads to oxidative stress, which further weakens cancer.—
Hannah Millington,
MSNBC Newsweek,
13 Oct. 2025
Verb
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If Britain continues down the path of criminalizing thought and prayer, the alliance risks being reduced to polite diplomacy while its moral core rots away.—
Lois McLatchie Miller,
MSNBC Newsweek,
20 Aug. 2025
Verb
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In a 20-second black and white video of the strike posted to X, a small boat can be seen apparently sitting motionless on the water when a long thin projectile descends on it, triggering an explosion.—
Dan Gooding,
MSNBC Newsweek,
24 Oct. 2025
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As music and dance meld in celebration of artistry, culture and history, an evil descends, threatening to devour the fabric and heart of the community — and all that Smoke and Stack have worked to achieve.—
Matt Grobar,
Deadline,
16 Oct. 2025
Cite this Entry
“Decays.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/decays. Accessed 31 Oct. 2025.
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