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
This is in spite of the potential deleterious impacts, not just on individuals, but on the businesses themselves.
—
Hugh Cameron, MSNBC Newsweek, 12 June 2025
His myopia was at least as deleterious to the liberation of the unconscious mind as his charisma were beneficial.
—Jonathon Keats, Forbes.com, 29 Apr. 2025
In his fast-paced, highly accessible book, Beiser shows how the environmental consequences of competition for these metals can be as deleterious as carbon emissions, especially when mining activities are poorly managed and regulated.
—Foreign Affairs, 22 Apr. 2025
This resulting pollution has had deleterious effects on the area’s residents, with some pockets of the region being estimated to confer a 700-times greater cancer risk relative to the national average.
—Henna Hundal, Forbes.com, 28 Apr. 2025
See All Example Sentences for deleterious
Hugh Cameron, MSNBC Newsweek, 12 June 2025
His myopia was at least as deleterious to the liberation of the unconscious mind as his charisma were beneficial.
—Jonathon Keats, Forbes.com, 29 Apr. 2025
In his fast-paced, highly accessible book, Beiser shows how the environmental consequences of competition for these metals can be as deleterious as carbon emissions, especially when mining activities are poorly managed and regulated.
—Foreign Affairs, 22 Apr. 2025
This resulting pollution has had deleterious effects on the area’s residents, with some pockets of the region being estimated to confer a 700-times greater cancer risk relative to the national average.
—Henna Hundal, Forbes.com, 28 Apr. 2025
See All Example Sentences for deleterious
Recent Examples of Synonyms for deleterious
Adjective
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Antisocial Anger Some teenagers express their anger through harmful behaviors such as threatening others, vandalism, skipping school or using drugs.—
Mark Travers,
Forbes.com,
16 July 2025
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Independent testing confirms that the supplement contains the ingredients listed on the label and is free from harmful contaminants.—
Kirstyn Hill,
Health,
15 July 2025
Adjective
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These dams have detrimental ecological impacts in an area that is already experiencing a high amount of litter.—
Ruby Grisin,
The Courier-Journal,
11 July 2025
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In addition to the risks of dehydration and heat illness, exposure to the sun is detrimental to your skin.—
Heidi Moawad,
Verywell Health,
10 July 2025
Adjective
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Possible issues associated with consuming too much of the spice include allergic reactions (that can range from mild irritation to serious symptoms), stomach pain and potential adverse interactions with medications such as blood thinners.—
Daryl Austin,
USA Today,
11 July 2025
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Earth’s magnetic field naturally protects living things and Earth-orbiting satellites from most adverse effects of space weather.—
Mojtaba Akhavan-Tafti,
The Conversation,
11 July 2025
Adjective
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The Baltimore area is under a flood watch, as thunderstorms and damaging winds are possible Monday afternoon, according to the National Weather Service.—
Baltimore Sun staff,
Baltimore Sun,
14 July 2025
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Stay away from windows as flying debris generated by damaging winds can be deadly.—
NC Weather Bot,
Charlotte Observer,
13 July 2025
Adjective
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Other symptoms can include itching, swelling, and a throbbing pain that radiates up the affected limb, according to Cleveland Clinic. Types Of Jellyfish To Look Out For According to Coffey, the U.S. is home to more than 9,000 species of jellyfish, and only about 100 are considered dangerous.—
Meghan Overdeep,
Southern Living,
11 July 2025
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Making Their Lives Too Easy Wealth without work creates a dangerous illusion.—
Anatoly Iofe,
Forbes.com,
11 July 2025
Cite this Entry
“Deleterious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/deleterious. Accessed 25 Jul. 2025.
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