as in harmful
causing or capable of causing harm
nicotine has long been recognized as a deleterious substance
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Recent Examples of deleterious
Not to mention that on a more macro scale, hardly anything threatens our economy and our society more than the deleterious impacts of unchecked climate change.
—
New York Daily News Editorial Board, New York Daily News, 23 Apr. 2025
Whether imposed by the U.S. or a foreign government, adopting drug price controls in the U.S. will have the same deleterious impacts – rising drug shortages coupled with sharply lower incentives to develop new medicines.
—Wayne Winegarden, Forbes.com, 20 Apr. 2025
The strength of Ukraine's defense and the deleterious impact of Western sanctions on its economy have forced Russia to seek support in its war from its partners, including China, Iran and North Korea.
—Arick Wierson, MSNBC Newsweek, 16 Apr. 2025
The decline of the bundle has had a deleterious downstream impact on broadcast TV viewing, as only 4% of U.S. homes receive their TV signals exclusively via an antenna/over-the-air setup.
—Anthony Crupi, Sportico.com, 1 Apr. 2025
See All Example Sentences for deleterious
New York Daily News Editorial Board, New York Daily News, 23 Apr. 2025
Whether imposed by the U.S. or a foreign government, adopting drug price controls in the U.S. will have the same deleterious impacts – rising drug shortages coupled with sharply lower incentives to develop new medicines.
—Wayne Winegarden, Forbes.com, 20 Apr. 2025
The strength of Ukraine's defense and the deleterious impact of Western sanctions on its economy have forced Russia to seek support in its war from its partners, including China, Iran and North Korea.
—Arick Wierson, MSNBC Newsweek, 16 Apr. 2025
The decline of the bundle has had a deleterious downstream impact on broadcast TV viewing, as only 4% of U.S. homes receive their TV signals exclusively via an antenna/over-the-air setup.
—Anthony Crupi, Sportico.com, 1 Apr. 2025
See All Example Sentences for deleterious
Recent Examples of Synonyms for deleterious
Adjective
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Some of these harmful ideologies might be downstream of these larger root causes.—
ArsTechnica,
ArsTechnica,
30 May 2025
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The jury is still out on whether emulsifiers are harmful to the gut.—
Fran Kritz,
Verywell Health,
30 May 2025
Adjective
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The multitrillion-dollar GOP tax bill could have detrimental impacts on decarbonization efforts in the U.S., according to energy experts.—
Julia Jacobo,
ABC News,
23 May 2025
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President Donald Trump's economic agenda is having a detrimental impact on workplace mental health, according to the American Psychological Association (APA).—
Hugh Cameron,
MSNBC Newsweek,
22 May 2025
Adjective
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In 2023, for example, a federal judge ruled that mifepristone should be taken off the market by citing low-quality studies that reported adverse effects from mifepristone.—
Keren Landman,
The Atlantic,
24 May 2025
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Those impacted by this recall or others can report a complaint or adverse event by visiting Industry and Consumer Assistance.—
Fernando Cervantes Jr,
USA Today,
24 May 2025
Adjective
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Potent thunderstorms across the central and eastern U.S. this week could trigger flash floods, damaging winds and possible tornadoes as California prepares for its first heat wave of the season.—
Christopher Cann,
USA Today,
29 May 2025
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The plains in southeastern Colorado can expect damaging wind gusts up to 70 mph, 2-inch hail, heavy rain and a chance for tornadoes, according to a Hazardous Weather Outlook from the weather service's Pueblo office.—
Lauren Penington,
Denver Post,
28 May 2025
Adjective
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Cruise’s wing-walking sequence was somehow even more dangerous.—
Tyler Foggatt,
New Yorker,
24 May 2025
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Even ejecting from the aircraft can be dangerous and traumatic.—
Olivia B. Waxman,
Time,
24 May 2025
Cite this Entry
“Deleterious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/deleterious. Accessed 4 Jun. 2025.
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