How to Use harmful in a Sentence

harmful

adjective

• DDT has been proven to be extremely harmful to the environment.
• No, not all blue light is harmful.
  — Samantha Agate, Sacbee.com, 12 June 2026
• No, not all blue light is harmful.
  — Samantha Agate, Sacbee.com, 13 June 2026
• And some types of glyphosates may be more harmful than others.
  — Michal Ruprecht, CNN Money, 24 Feb. 2026
• If their viewpoint is not harmful, do your best to live and let live.
  — Tarot Astrologers, Chicago Tribune, 14 Apr. 2023
• This can leave a harmful reside.
  — Cody Godwin, USA Today, 19 Apr. 2026
• Most of the time, these changes are harmful to the virus or have no effect.
  — Brenda Goodman, CNN, 8 Feb. 2025
• That shorthand is harmful and wrong.
  — Letters To The Editor, The Orlando Sentinel, 7 Mar. 2026
• Words can be very harmful even when they are not intended to be.
  — Jack Lang, New York Times, 11 June 2026
• But a new study shows that being denied one can be more harmful.
  — New York Times, 10 June 2022
• But when that timing is off, the results can be harmful.
  — Alice Cason, Mercury News, 20 Oct. 2025
• Some of these supplements may even be harmful to your health.
  — Dallas News, 23 Dec. 2022
• That can lead to algae blooms that are harmful to aquatic life.
  — Matthew Adams, Fort Worth Star-Telegram, 19 June 2026
• Study after study have shown the harmful effects of too much screen time.
  — Bill Ready, Time, 23 Apr. 2025
• This knowledge is one of the best ways to break harmful patterns.
  — Gili Malinsky, CNBC, 12 May 2026
• The rain, despite its name, is not harmful in itself.
  — Claire Cameron, Scientific American, 2 Mar. 2026
• 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
• These effects are more harmful for children younger than six.
  — Chiara Kim, PEOPLE, 2 Apr. 2026
• Why are so few spiders harmful to humans?
  — Encyclopedia Britannica, 2 Apr. 2026
• Silence, after all, can be more painful than harmful words.
  — Georg Szalai, HollywoodReporter, 20 Mar. 2026
• Asbestos can be harmful to health if inhaled.
  — Amaris Encinas, USA Today, 28 May 2026
• Are harmful inputs dropping year by year?
  — William Jones, USA Today, 6 Nov. 2025
• The jury is still out on whether emulsifiers are harmful to the gut.
  — Fran Kritz, Verywell Health, 30 May 2025
• In most of these cases, the aim is to capture and store the harmful greenhouse gas.
  — Mack Degeurin, Popular Science, 28 May 2025
• Some microbes are helpful to the body, while others can be harmful.
  — Andrea Michelson, Verywell Health, 29 Aug. 2023
• The lack of structure could have harmful consequences for kids in the long run.
  — Elisabeth Sherman, Parents, 1 Oct. 2025
• At work, the impact may be less dramatic but still harmful.
  — Dr. Diane Hamilton, Forbes.com, 1 Sep. 2025
• That’s the most harmful dysfunction right now.
  — Kevin J. Morrison, Mercury News, 19 May 2026
• The ideas will counter some of the harmful effects of climate change or plastics in the seas.
  — Simon Perry, PEOPLE, 21 Oct. 2025