Meaning: having a harmful effect, mostly in a subtle way
Citizens of the city are worried about the pernicious effects of air pollution.
The minister criticized what he called the pernicious lie of the opposition.
Synonyms: damaging, detrimental, dangerous
The first known use of the word is in the 15th century.
Read more about the word ‘pernicious’ from the website of Merriam Webster.
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