Word.ws English Dictionary

pernicious

UK/pəˈnɪʃəs//pɚˈnɪʃəs/

pernicious adjective: causing much harm in a subtle way.

Adjective (1)

pernicious (comparative more pernicious, superlative most pernicious)

  1. Causing much harm in a subtle way.
    • pernicious influence
    • pernicious effects
    Synonyms:
    deleterious, venom
  2. Causing death or injury; deadly.
    Synonyms:
    attery
  3. Insidiously villainous: intending to cause harm, especially in a subtle way.

Adjective (2)

pernicious (comparative more pernicious, superlative most pernicious)

  1. (obsolete) swift; celeritous.

pernicious meaning in Hindi, Tamil, Urdu and Bengali

pernicious in Hindi

causing much harm
नाशक nāśak
causing death or injury
नाशक nāśak

pernicious in Tamil

உயிரைப் போக்கும், உயிர்ப் போக்கும், நாச, பர்னீஷியல் சோகை

pernicious in Urdu

غارتگر, مہلک

pernicious in Bengali

অত্যন্ত ক্ষতিকর, ধ্বংসাত্মক
More languagesFewer languages
pernicious in Malayalam
ദോഷകരമായ, കെടുക്കുന്ന, ഹാനികരമായ, ദ്രോഹകരമായ
pernicious in Kannada
ಅಳಿಸಬಲ್ಲ, ಕೊಲ್ಲಬಲ್ಲ, ಕೇಡು ನಡೆಸಬಲ್ಲ, ಹಾನಿಕಾರಕ

Examples of pernicious in a sentence

  • They warned of the pernicious effects of misinformation.
  • The weed has a pernicious influence on local crops.
  • Puritanism no longer employs the thumbscrew and lash; but it still has a most pernicious hold on the minds and feelings of the American people.1911, Emma Goldman, “The Hypocrisy of Puritanism”, in Anarchism and Other Essays:
  • A man has always been a woman’s best excuse to avoid her destiny; that a man is her destiny is one of patriarchy’s most pernicious tenets.2019 July 9, Toni Bentley, “What Do the Sex Lives of ‘Three Women’ Tell Us About Female Desire?”, in New York Times:

All 14 example sentences with pernicious

Synonyms of pernicious

Forms of pernicious

comparativemore pernicious
superlativemost pernicious

Origin of pernicious

From Middle English, from Old French pernicios, from Latin perniciōsus (“destructive”), from perniciēs (“destruction”), from per (“through”) + nex (“slaughter, death”).

Analyzable as pernīx ("swift") + -ious.

Words formed from pernicious

Phrases with pernicious

Words that rhyme with pernicious

18 more rhymesFewer rhymes

Questions about pernicious

What does pernicious mean?
Pernicious means causing much harm in a subtle way.
What is pernicious in Hindi?
Pernicious in Hindi is नाशक (nāśak). See Pernicious meaning in Hindi.
How do you use pernicious in a sentence?
They warned of the pernicious effects of misinformation.
What part of speech is pernicious?
Pernicious is an adjective.
How do you pronounce pernicious?
Pernicious is pronounced /pəˈnɪʃəs/ (UK).

Words near pernicious in the dictionary

  1. Pernice
  2. Pernices
  3. Perniciaro
  4. Perniciaros
  5. pernicion
  6. pernicious
  7. pernicious anaemia
  8. pernicious anaemias
  9. pernicious anemia
  10. pernicious anemias
  11. pernicious anæmia

Source and license

Adapted from Wiktionary: pernicious (page history and authors); pernicious (Tamil Wiktionary) (page history and authors); pernicious (Urdu Wiktionary) (page history and authors); pernicious (Bengali Wiktionary) (page history and authors); pernicious (Malayalam Wiktionary) (page history and authors); pernicious (Kannada Wiktionary) (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Pronunciation audio from Wikimedia Commons, each file under its own free license: en-us-pernicious.ogg.

Cite this entry: “pernicious.” Word.ws, https://word.ws/pernicious. Based on Wiktionary, CC BY-SA 4.0.