How to Use poisonous in a Sentence

poisonous

adjective
  • Chocolate is poisonous to dogs.
  • This species of spider is extremely poisonous.
  • The pond isn’t poisonous all the time, Mr. McAdams said.
    Christopher Flavelle Sophie Park, New York Times, 1 Jan. 2023
  • The noise can be poisonous to your morale and your state of mind.
    Dave Knox, Forbes, 20 June 2022
  • The leaves attached to the rhubarb stalk are poisonous.
    Terri Milligan, Milwaukee Journal Sentinel, 13 Apr. 2018
  • The zoo said Cara is not poisonous and didn't pose a threat to the public.
    NBC News, 8 July 2021
  • Are there poisonous plants or venomous snakes in the area?
    Meg Carney, Field & Stream, 28 June 2023
  • Mushrooms do grow in the wild, many of which may be poisonous.
    Ashley Martens, Women's Health, 16 Feb. 2023
  • And there were giant spiders that were poisonous and stuff on the edge of the trees.
    Nick Romano, EW.com, 18 Dec. 2024
  • This makes the Funnel Web Spider one of the most poisonous spiders in the world.
    Tim MacWelch, Outdoor Life, 3 May 2023
  • The shell of the castor bean is highly poisonous and can be used to make ricin.
    Eric Schmitt, New York Times, 6 July 2018
  • Like, say, if the rain is poisonous, wouldn't there be a lack of potable water?
    Rebecca Farley, refinery29.com, 7 May 2018
  • Turns out the dog ate some poisonous leaves and perished.
    Abraham Riesman, Vulture, 5 Feb. 2021
  • The baits are poisonous and can pose a hazard to children, pets and wildlife.
    Michael Harrelson, sandiegouniontribune.com, 12 Apr. 2018
  • Every part of the pong pong tree is poisonous, but the leaves and barks aren’t as potent as the seeds.
    Angela Haupt, Time, 7 Apr. 2025
  • Every part of the pong pong tree is poisonous, but the leaves and barks aren’t as potent as the seeds.
    Angela Haupt, Time, 7 Apr. 2025
  • This makes the Funnel Web Spider one of the most poisonous spiders in the world.
    Tim MacWelch, Outdoor Life, 11 Nov. 2019
  • The city was swiftly engulfed by a black cloud of hot poisonous gas.
    Nathaniel Rich, The New York Review of Books, 25 May 2022
  • There are a lot of look-alikes out there, some poisonous or toxic.
    Krista Simmons, Sunset Magazine, 10 Sep. 2022
  • On April 7th more than 40 Syrians were killed with poisonous gas in the town of Douma.
    The Economist, 12 Apr. 2018
  • And what former camp kid can’t spout off a rhyme about which snakes are poisonous and which are safe?
    Mary Shannon Wells, Southern Living, 11 July 2024
  • Kristin Chenoweth is the irresistible voice of the poisonous frog and stands as one of the film’s best new additions.
    Miami Staff, Miami Herald, 30 Jan. 2024
  • Almost anything can be poisonous if it is used in the wrong way, in the wrong amount, or by the wrong person.
    Emily Paterson, baltimoresun.com/maryland/carroll, 13 Mar. 2021
  • Even at the start, poisonous elections promised to make 2020 an ordeal.
    San Diego Union-Tribune, 31 Dec. 2020
  • The leaves do have a milky sap that can cause a rash in some people if they are exposed to it, but the plants are not poisonous.
    Janet B. Carson, arkansasonline.com, 11 Dec. 2023
  • The state-of-the-art theater, once a source of immense collective pride, is now a poisonous wedge.
    Gary Baum, The Hollywood Reporter, 26 Sep. 2023
  • Raisins are poisonous to dogs and can lead to renal failure.
    Washington Post, 14 Nov. 2020
  • The fruits and seeds produced by the female plant are also poisonous.
    San Diego Union-Tribune, 14 Nov. 2020
  • Now, the pair and a team of scientists have shared their latest research about an antivenom that can protect mice against the toxins of 19 species of poisonous snake.
    Ashley Strickland, CNN Money, 4 May 2025
  • Growing up near the Everglades, Hiaasen would collect and sell poisonous snakes with his friends for $2 a foot (the rate for nonpoisonous snakes was lower).
    Amy Weiss-Meyer, The Atlantic, 8 May 2025

Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'poisonous.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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