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
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
Conversely, cannabis appears to be especially deleterious to the cognitive and psychological well-being of young people.
—Alexander Nazaryan, New Yorker, 29 Jan. 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
Virtually no one’s immune from their deleterious effects, since they’re found in a wide variety of everyday products.
—Editorial, Boston Herald, 11 Jan. 2026
See All Example Sentences for deleterious
Rafael Perez, Oc Register, 1 Mar. 2026
Conversely, cannabis appears to be especially deleterious to the cognitive and psychological well-being of young people.
—Alexander Nazaryan, New Yorker, 29 Jan. 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
Virtually no one’s immune from their deleterious effects, since they’re found in a wide variety of everyday products.
—Editorial, Boston Herald, 11 Jan. 2026
See All Example Sentences for deleterious
Recent Examples of Synonyms for deleterious
Adjective
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Prosecutors maintain the search was legal because it was conducted in conjunction with an arrest and officers were following Altoona police protocols that require them to check for dangerous items that could be harmful to them or the public.—
Michael R. Sisak,
Los Angeles Times,
18 May 2026
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Santos is charged with distributing food with a harmful substance, according to court records obtained by the Telegram & Gazette, part of the USA TODAY Network.—
Drew Pittock,
USA Today,
18 May 2026
Adjective
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However, pruning mistakes can be very detrimental, introducing shock or infection to an otherwise thriving shrub, tree, or flower.—
Emily Hayes,
Martha Stewart,
19 May 2026
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And then there is the part of the leverage exercise that so many times before has proven detrimental to the Heat — the waiting game.—
Ira Winderman,
Sun Sentinel,
16 May 2026
Adjective
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Post-Adverse Outcome Disclosure Obligations The replacement bill also creates disclosure obligations after an adverse outcome.—
Alonzo Martinez,
Forbes.com,
15 May 2026
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Prolonged stress can have adverse consequences, especially for pregnant mothers, children and critically ill patients.—
Adam Harrington,
CBS News,
14 May 2026
Adjective
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Storms could be strong and organized, bringing all severe weather threats — tornadoes, large hail, and damaging winds — and downpours will also be possible, the Weather Service said.—
Kansas City Star,
Kansas City Star,
15 May 2026
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Why Migrations Generate Headaches One of the most damaging aspects of migration happens in the human aspect of the business.—
Thomas Berndorfer,
Forbes.com,
15 May 2026
Adjective
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But pretty quickly, Wahl said that both the mother and police realized something more dangerous could be brewing.—
Amanda Lee Myers,
USA Today,
19 May 2026
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Sheets touched on the other key to his success — and any dangerous hitter’s success — in the above quote.—
Kevin Acee,
San Diego Union-Tribune,
18 May 2026
Cite this Entry
“Deleterious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/deleterious. Accessed 21 May. 2026.
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