How to Use harmful in a Sentence

harmful

adjective
  • DDT has been proven to be extremely harmful to the environment.
  • If their viewpoint is not harmful, do your best to live and let live.
    Tarot Astrologers, Chicago Tribune, 14 Apr. 2023
  • That's not right, and this lawsuit seeks to stop this harmful merger.
    Kate Gibson, CBS News, 15 Jan. 2024
  • That’s not right, and this lawsuit seeks to stop this harmful merger.
    Alexander Coolidge, The Enquirer, 15 Jan. 2024
  • That doesn’t mean the virus’s growth isn’t harmful, however.
    Chloe Taylor, Fortune, 2 Mar. 2023
  • Here's what to know about the chemical and its harmful health effects.
    Grace Tucker, The Enquirer, 24 Sep. 2024
  • The hope is the breakthrough will pave the way for other vaccines to control all sorts of harmful viruses and pests.
    Ben Tracy, CBS News, 8 Mar. 2023
  • Some microbes are helpful to the body, while others can be harmful.
    Andrea Michelson, Verywell Health, 29 Aug. 2023
  • Often, a small glass of milk or bowl of yogurt is enough to protect your belly from the harmful effects of the medicine.
    Avery Hurt, Discover Magazine, 10 Jan. 2024
  • This can expose the brain to chemicals and proteins that are harmful to it – compounds that are safe in the blood but toxic to the brain.
    Rachael Seidler, Discover Magazine, 22 Sep. 2023
  • The unique design and structure make this wire creation sturdy — and sometimes harmful to the touch.
    Brittany Kasko, Fox News, 24 Nov. 2023
  • The hat can be folded into your bag without losing its shape and the wide brim can protect you from the sun's harmful rays.
    Kristin Braswell, Travel + Leisure, 25 Sep. 2024
  • But according to Michel’s new lawyers, Kenner’s use of the program was harmful, not helpful, to his client’s case.
    Bill Donahue, Billboard, 17 Oct. 2023
  • That doesn’t mean that there won’t be serious consequences to AI, some of them harmful.
    Evan Ackerman, IEEE Spectrum, 20 July 2023
  • Reviewers are big fans of the stretchy, soft fabric, which also protects your skin from the sun’s harmful UV rays.
    Kristin Canning, SELF, 2 July 2024
  • This is much more harmful than protests on ivy league campuses, but this is allowed to run rampant?
    Will Oremus, Washington Post, 14 Dec. 2023
  • Deng has also spoken of the need to erase harmful stereotypes and perceptions of the country and players.
    Sam Joseph, CNN, 27 July 2024
  • Below, two experts explain the harmful impact of nail biting and how to stop.
    India Espy-Jones, Essence, 22 May 2024
  • Experts tend to agree that social media can be harmful.
    Melissa Willets, Parents, 10 Jan. 2024
  • The downside is that their speech can be hateful, harassing, false and harmful in other ways.
    Erwin Chemerinsky, The Mercury News, 1 Mar. 2024
  • This makes the bottom shelves the best spot to keep raw meat cold, which is vital to keeping it fresh and avoiding harmful bacteria growth.
    Alana Al-Hatlani, Southern Living, 18 Aug. 2024
  • Wasps can be harmful due to their stings, which may cause pain, swelling and allergic reactions.
    Tiffany Acosta, The Arizona Republic, 16 Aug. 2024
  • Wishy-washiness is so much more harmful to would-be hosts than a polite rejection would be.
    Jacobina Martin, Washington Post, 19 June 2023
  • More studies are needed, but digital screens might not emit enough blue light to be harmful.
    Carla Delgado, Discover Magazine, 15 Mar. 2023
  • One common myth around the eclipse is the idea that the total solar eclipse produces harmful rays that can cause blindness, according to NASA.
    Aliza Chasan, CBS News, 8 Apr. 2024
  • Cloth, dust and surgical masks don’t protect from the harmful particles in smoke.
    Gwozniac, oregonlive, 31 Aug. 2023
  • Made Safe: The seal means it is not made with any substances the organization has deemed harmful to human health.
    Jamie Weissman, Better Homes & Gardens, 27 Oct. 2023
  • Ground-ozone, or ozone near the ground, however, is harmful to humans and the environment.
    Aurora Sousanis, Detroit Free Press, 9 July 2023
  • However, almost any substance—even natural substances—can be harmful in high amounts or could even be harmful in small amounts for some people.
    Heidi Moawad, Verywell Health, 31 Oct. 2024
  • Frozen gummy bears are trending on TikTok, with hundreds of videos flooding users' feeds of people biting into cold, colorful candies—but a dental nurse told Newsweek the trend could be harmful.
    Gordon G. Chang, Newsweek, 31 Oct. 2024

Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'harmful.' 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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