Synonym Chooser

How is the word pernicious different from other adjectives like it?

Some common synonyms of pernicious are baneful, deleterious, detrimental, and noxious. While all these words mean "exceedingly harmful," pernicious implies irreparable harm done through evil or insidious corrupting or undermining.

the claim that pornography has a pernicious effect on society

When is baneful a more appropriate choice than pernicious?

The words baneful and pernicious are synonyms, but do differ in nuance. Specifically, baneful implies injury through poisoning or destroying.

the baneful notion that discipline destroys creativity

When could deleterious be used to replace pernicious?

While in some cases nearly identical to pernicious, deleterious applies to what has an often unsuspected harmful effect.

a diet found to have deleterious effects

In what contexts can detrimental take the place of pernicious?

The meanings of detrimental and pernicious largely overlap; however, detrimental implies obvious harmfulness to something specified.

the detrimental effects of excessive drinking

When is it sensible to use noxious instead of pernicious?

While the synonyms noxious and pernicious are close in meaning, noxious applies to what is both offensive and injurious to the health of a body or mind.

noxious chemical fumes

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
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
Recent Examples of Synonyms for pernicious
Adjective
  • The debate over the law centers on balancing accountability for harmful content with the risks of censorship and stifled innovation.
    Daryl Lim, The Conversation, 9 Apr. 2025
  • Shiny and minty, these balms provide a gloss-like effect while protecting your lips from the sun’s harmful rays.
    Jillian Dara, Travel + Leisure, 9 Apr. 2025
Adjective
  • Prioritising one competition in favour of another is a dangerous game to play in any case when the stakes are so high.
    Mark Critchley, New York Times, 19 Apr. 2025
  • We at ‘9-1-1’ salute all the incredible men and women who do these dangerous jobs and strive to keep us safe.
    Jennifer Maas, Variety, 18 Apr. 2025
Adjective
  • Archer: Not having a rink in L.A. has been really detrimental to the skating community.
    Kailyn Brown, Los Angeles Times, 16 Apr. 2025
  • Furthermore, the study highlights cultural contingencies, indicating that the detrimental effects of workplace aggression are amplified in cultures characterized by high individualism and masculinity.
    Tomas Chamorro-Premuzic, Forbes.com, 15 Apr. 2025
Adjective
  • But in recent years, lung disease for miners has become a major concern again, Laney says, because coal increasingly comes from mines embedded in sandstone, and which generates dust that's 20 times more damaging to lungs than coal.
    Yuki Noguchi, NPR, 9 Apr. 2025
  • The storms are threatening large hail and damaging wind gusts up to 60 mph.
    Raja Krishnamoorthi, MSNBC Newsweek, 9 Apr. 2025
Adjective
  • In the study, the researchers measured patients’ impulse control behavior disorders, excessive daytime sleepiness, blood pressure changes and weight changes, and found that the adverse effects linked to tavapadon were no different from those who received a placebo.
    Melissa Rudy, FOXNews.com, 18 Apr. 2025
  • So far, Lilly said the adverse effects of its new pill are consistent with GLP-1s, a class of medications primarily used to treat type 2 diabetes.
    Jonathan Limehouse, USA Today, 18 Apr. 2025

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Cite this Entry

“Pernicious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/pernicious. Accessed 25 Apr. 2025.

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