as in harmful
causing or capable of causing harm
the pernicious effects of illegal narcotics on society
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Recent Examples of pernicious
On the surface, dietary advice to eat more vegetables hardly seems pernicious.
—
Rachel Hope Cleves / Made By History, TIME, 14 Feb. 2025
Eggs have become vivid symbols of Americans’ frustration over the pernicious inflation of recent years.
—Laura Washington, Chicago Tribune, 12 Feb. 2025
One example was that the law capped the pernicious state and local tax deduction at $10,000.
—The Editors, National Review, 10 Feb. 2025
The pernicious effects of bias also play out in the workplace—with negative consequences for individuals and organizations.
—Iris Bohnet, Big Think, 28 Jan. 2025
See All Example Sentences for pernicious
Rachel Hope Cleves / Made By History, TIME, 14 Feb. 2025
Eggs have become vivid symbols of Americans’ frustration over the pernicious inflation of recent years.
—Laura Washington, Chicago Tribune, 12 Feb. 2025
One example was that the law capped the pernicious state and local tax deduction at $10,000.
—The Editors, National Review, 10 Feb. 2025
The pernicious effects of bias also play out in the workplace—with negative consequences for individuals and organizations.
—Iris Bohnet, Big Think, 28 Jan. 2025
See All Example Sentences for pernicious
Recent Examples of Synonyms for pernicious
Adjective
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These tools can help detect harmful symbols, explicit imagery or copyright violations before content is published.—
Anees Ali Khan,
Forbes.com,
8 Aug. 2025
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In a time when transgender rights are under threat via a backlash spurred on by harmful theology within church spaces, the call for inclusion — despite one’s gender identity, expression, or sexuality — is both a rarity and necessity within the traditional gospel and Christian world.—
Meagan Jordan,
Rolling Stone,
8 Aug. 2025
Adjective
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That said, the Revolution had promising spells of attacking play and even looked the more dangerous side in the first half.—
Julian Cardillo,
Boston Herald,
17 Aug. 2025
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In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain.—
NC Weather Bot,
Charlotte Observer,
16 Aug. 2025
Adjective
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Air pollution of all forms can be detrimental to health, but the tiny particles in smoke are particularly pernicious.—
Bloomberg,
Mercury News,
13 Aug. 2025
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Losing Love for any stretch of time would be detrimental to the Packers' season.—
James Brizuela,
MSNBC Newsweek,
12 Aug. 2025
Adjective
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In a surprising aside given the damaging, lurid testimony in the trial about Combs’ private life, Agnifilo said one of Diddy’s future goals is to perform at one of New York’s most iconic venues again.—
Gil Kaufman,
Billboard,
7 Aug. 2025
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Even though plants need sun to grow, too much scorching sunshine can be damaging.—
Claire Hoppe Norgaard,
Better Homes & Gardens,
4 Aug. 2025
Adjective
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The maintenance of a favorable risk-reward ratio over a shorter timeframe of 5 years is promising for retirement accounts – mitigating the risk of liquidation (if necessary) during adverse drawdown scenarios.—
Trefis Team,
Forbes.com,
14 Aug. 2025
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Many models struggle to operate in adverse weather conditions, and drones have weight limits for parcels.—
Meghan Hall,
Sourcing Journal,
14 Aug. 2025
Cite this Entry
“Pernicious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/pernicious. Accessed 21 Aug. 2025.
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