poison 1 of 3

Definition of poisonnext

poison

2 of 3

noun

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

Synonyms & Similar Words

Antonyms & Near Antonyms

poison

3 of 3

verb

1
2
3
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

Synonyms & Similar Words

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
The poison of vipers is on their lips—and yet stop. Peter Wehner, The Atlantic, 10 June 2026 Acetamiprid is a neonicotinoid, modeled after nicotine, which was used as rat poison and insecticide as far back as the 1600s. Sandee Lamotte, CNN Money, 9 June 2026
Verb
The ants are attracted to the water and sugar, and take the borax back to the nest to poison the colony. Mary Marlowe Leverette, The Spruce, 9 June 2026 Lewis was accused of poisoning two white female housemates, assaulted by a white mob in response to the charge, and acquitted in court, only to then be accused of stealing art supplies and prohibited from reënrolling. Zachary Fine, New Yorker, 8 June 2026 See All Example Sentences for poison
Recent Examples of Synonyms for poison
Adjective
  • The plant, which is non-native and is for ornamental purposes, is poisonous to horses.
    Alexa Herrera, CBS News, 16 June 2026
  • Not only are the leaves poisonous to humans and pets, but the vine itself is invasive and can spread disease to trees.
    Samantha Johnson, Martha Stewart, 7 June 2026
Noun
  • At the same time, the Trump administration has taken steps to roll back regulations on emissions from industrial facilities, such as mercury and other toxics emitted from coal plants.
    Los Angeles Times, Los Angeles Times, 27 May 2026
  • Portside residents face higher cancer risk from air toxics than 93% of the nation.
    Jose Franco Garcia, San Diego Union-Tribune, 12 May 2026
Verb
  • Thursday’s study is not the first indication that social media may be tainting people’s views on sunscreen and sun safety.
    Lily Alvino, NBC news, 18 June 2026
  • Troupis and Roman both filed motions seeking to relocate the trial from Dane County, which includes Madison, to neighboring Jefferson County, saying negative publicity had tainted the potential jury pool.
    CBS News, CBS News, 17 June 2026
Verb
  • Perversely, this exemption may encourage companies to switch to highly-polluting diesel engines to avoid idling fines.
    Chris Hartmann, New York Daily News, 16 June 2026
  • Will the increasing population restrain from polluting the soil, the water and the atmosphere?
    Chicago Tribune, Chicago Tribune, 16 June 2026
Verb
  • Operating without high temperatures also allowed the researchers to use a wider range of sensing materials, including polymers that might degrade under heat.
    Aamir Khollam, Interesting Engineering, 17 June 2026
  • Thermomechanical recycling, another energy-intensive endeavor, relies on high-quality, homogeneous feedstock that can only be processed a limited number of times before the plastic degrades.
    Jasmin Malik Chua, Footwear News, 17 June 2026
Verb
  • Kelce, who will turn 37 years old in the middle of the season, is looking to rebound from a bit of a down season.
    Ian Miller OutKick, FOXNews.com, 15 June 2026
  • The Knicks used their experience and moxie to hold off the exuberant young Spurs’ early game runs, eventually turning the screws in the second and third quarters to build solid leads.
    Kyle Feldscher, CNN Money, 14 June 2026
Noun
  • An investigation revealed that the horse was suffering from multiple diseases and was a decade older than his driver had initially reported, according to the organization.
    Thao Nguyen, USA Today, 18 June 2026
  • Those who have been vaccinated or previously had measles are likely protected against the disease.
    Matthew Rodriguez, CBS News, 18 June 2026
Verb
  • Color Changes Foods can darken or brown slightly from exposure to oxygen rather than spoiling.
    Brandee Gruener, Southern Living, 18 June 2026
  • Food and drink With 10 bars and restaurants, including the lobby cafe and one in the attached Beymen Mall, guests are spoiled for choice.
    Condé Nast, Condé Nast Traveler, 17 June 2026

Browse Nearby Words

Cite this Entry

“Poison.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/poison. Accessed 21 Jun. 2026.

More from Merriam-Webster on poison

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster