poison 1 of 3

adjective

Definition of poisonnext
as in poisoned
containing or contaminated with a substance capable of injuring or killing a living thing the witch gave Snow White a poison apple

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poison

2 of 3

noun

ˈpȯi-zᵊn How to pronounce poison (audio)
as in toxic
a substance that by chemical action can kill or injure a living thing the only way to get rid of rats is to leave out poison

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poison

3 of 3

verb

1
as in to taint
to affect slightly with something morally bad or undesirable poisoning the minds of impressionable children with ethnic hatred

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2
as in to pollute
to make unfit for use by the addition of something harmful or undesirable exhaust fumes poisoning the air

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3
as in to degrade
to lower in character, dignity, or quality this party partisanship poisons the national debate we should be having about this urgent problem

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4
as in to turn
to cause to have often negative opinions formed without sufficient knowledge malicious rumors had poisoned many church members against the new pastor

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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 poison
Adjective
Michelle spins a long and complicated tale, but insists Teddy was wrong about the Andromedans trying to infiltrate and poison humanity. — Megan McCluskey, Time, 31 Oct. 2025 Constant procedural upheaval and backlogs are poison. — Scott White, Forbes.com, 15 Aug. 2025
Noun
Authorities have not identified the substance, but some of the poison sites give off a striking odor of diesel fuel. — Andrew Graham, Sacbee.com, 12 Aug. 2026 She was also treated for rodenticide toxicity, which occurs when humans or nontarget animals ingest rat or mouse poisons; however, caregivers did not believe that was the primary cause of her illness. — Saman Shafiq, USA Today, 12 Aug. 2026
Verb
For decades, many speculated Taylor had been poisoned with arsenic, as his sudden death happened during an intense political crisis over slavery. — Sophie Clausen, PEOPLE, 17 Aug. 2026 Trump is also poisoning the process at a moment when the system for casting votes in the United States really does need shoring up. — Amy Davidson Sorkin, New Yorker, 16 Aug. 2026 See All Example Sentences for poison
Recent Examples of Synonyms for poison
  1. poisonous
  2. toxic
  3. taint
  4. pollute
  5. degrade
  6. turn
  7. disease
  8. spoil
Adjective
  • For this reason, these poisonous mushrooms are more commonly confused with other types of edible mushrooms like chicken of the woods and chanterelles (more on these in a minute).
    — Katie Hill, Outdoor Life, 6 Aug. 2026
  • Perhaps ducks had been used as bio-processors, feeding on toads and metabolizing their poisonous compounds so that humans could safely consume them.
    — Kimon de Greef, Longreads, 4 Aug. 2026
Definition of poisonous
Noun
  • In late May, about 50,000 people in Orange County were evacuated because, at a Garden Grove site operated by GKN Aerospace, tanks holding a volatile hazardous chemical called methyl methacrylate were at risk of exploding or leaking toxics.
    — Patt Morrison, Los Angeles Times, 15 July 2026
  • Munoz is an independent toxicologist working in collaboration with MAHA against pesticides and toxics.
    — Sandee LaMotte, CNN Money, 10 July 2026
Definition of toxic
Verb
  • In July, the US was hit with a wave of explosive diarrhea caused by an outbreak of cyclospora, a parasite that spreads through food and water tainted with human feces.
    — Maggie Harrison Dupré, Futurism, 20 Aug. 2026
  • The president has pointed to Cohen’s reversal in the Daniels case as evidence that his own conviction on 34 felony counts was tainted.
    — Dave Goldiner, New York Daily News, 20 Aug. 2026
Definition of taint
Verb
  • The usual analogy is that generative AI and LLMs are akin to a factory that pollutes local waters.
    — Lance Eliot, Forbes.com, 19 Aug. 2026
  • Our state has thousands of sites already polluted with toxic chemicals and other pollutants, and those projects affect air quality, safe drinking water and community health for millions of Californians.
    — Shannon Olivieri Hovis, Mercury News, 18 Aug. 2026
Definition of pollute
Verb
  • Iran is expanding its defense capabilities, an Iranian army commander said Wednesday, after much of the country’s equipment was degraded by US-Israeli strikes in the early days of the war.
    — Mustafa Qadri, CNN Money, 26 Aug. 2026
  • The status of its nuclear program, degraded by bombing strikes in 2025, hasn't changed.
    — Susan Page, USA Today, 25 Aug. 2026
Definition of degrade
Verb
  • One of my non-negotiable recommendations is Tonnara di Scopello, another historic tuna fishery turned into a tiny museum and protected cove.
    — Megan Rose Murray, Condé Nast Traveler, 22 Aug. 2026
  • Her biweekly nostalgia program has turned into a daily online recap of the Keffe D trial.
    — Andy Rose, CNN Money, 22 Aug. 2026
Definition of turn
Noun
  • But rates of cardiac disease have fallen in recent years, as the medical community pivots to managing cholesterol levels, hypertension and diabetes—all risk factors for heart disease.
    — Angelica Ang, Fortune, 26 Aug. 2026
  • The administration said 80% of insurers pledged changes to preauthorization requirements for 80% of diseases and injuries by January 2026.
    — Stephanie Armour, CBS News, 25 Aug. 2026
Definition of disease
Verb
  • Cloud Residence spoils you even further with one pool on the terrace and another pool and a hot tub on its roof.
    — Condé Nast, Condé Nast Traveler, 22 Aug. 2026
  • The seeming confirmation that Cyberleek has a full build, likely from 2025, opens the door to the possibility that the story of GTA VI could start being spoiled.
    — Paul Tassi, Forbes.com, 20 Aug. 2026
Definition of spoil

Browse Nearby Words

poising
poison
poisoned
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Cite this Entry

“Poison.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/poison. Accessed 27 Aug. 2026.

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More from Merriam-Webster on poison

Britannica.com: Encyclopedia article about poison

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