as in harmful
causing or capable of causing harm
nicotine has long been recognized as a deleterious substance
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Example Sentences
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Recent Examples of deleterious
If signed, municipalities retain some say, with provisions allowing cities to stop plans that present deleterious environmental impacts, health and safety risks, or undue burden on infrastructure like sewer or water.
—
Mark Dee
march 28,
Idaho Statesman,
28 Mar. 2026
Chicago is a national example of the deleterious impact of this agenda on the national cultural landscape.
—
Jane M. Saks,
Chicago Tribune,
23 Mar. 2026
In July of last year Steyer sent out a tweet criticizing rent control for its deleterious and counterproductive effects.
—
Rafael Perez,
Oc Register,
1 Mar. 2026
Studies have shown that routine use of AI has a deleterious impact on cognition, creativity, recall, and critical thinking.
—
Krista Kafer,
Denver Post,
25 Jan. 2026
See All Example Sentences for deleterious
Mark Dee
march 28,
Idaho Statesman,
28 Mar. 2026
Chicago is a national example of the deleterious impact of this agenda on the national cultural landscape.
—
Jane M. Saks,
Chicago Tribune,
23 Mar. 2026
In July of last year Steyer sent out a tweet criticizing rent control for its deleterious and counterproductive effects.
—
Rafael Perez,
Oc Register,
1 Mar. 2026
Studies have shown that routine use of AI has a deleterious impact on cognition, creativity, recall, and critical thinking.
—
Krista Kafer,
Denver Post,
25 Jan. 2026
See All Example Sentences for deleterious
Recent Examples of Synonyms for deleterious
Adjective
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The plasma process also produced very little smoke or tar, reducing harmful secondary pollutants typically associated with biomass conversion and making the technology a cleaner way to produce renewable solid fuel.
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At the same time, its flowers attract beneficial predatory insects, such as ladybugs and parasitic wasps, that naturally hunt harmful garden pests.
Adjective
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And beneath the surface of those turquoise waters, marine life continues on without knowing their life is colliding in detrimental-to-them ways.
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Substance abuse is greatly detrimental in its own right, of course, but sometimes the issues that stem from it—stress, emotional exhaustion, secrecy, avoidance—can have similarly devastating long-term effects on a person’s wellbeing.
Adjective
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These conditions can increase your vulnerability to adverse effects from poor air quality.
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Valentine also testified that the FDA encourages infant formula companies to send in all adverse event reports and that nothing prevented Mead Johnson from doing so.
Adjective
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Each specimen was weighed and put in the same-sized containers filled with superworm larvae to determine the optimal ratio of larvae to specimen for thorough cleaning without damaging bones.
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And such a gap can be far more damaging than any technology shortfall.
Adjective
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Teri handled higher-value finds and saw that potentially dangerous items – like firearms and knives – got to the local sheriff’s office.
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Looking back through the sequence, Brazil have good numbers back and there is little need for anyone to overcommit — but a lazy tackle from behind leads to a free kick in a dangerous area.
Cite this Entry
“Deleterious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/deleterious. Accessed 6 Jul. 2026.
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