What is the meaning of pernicious?

adjective

  • Exceedingly harmful.
  • Working or spreading in a hidden and usually injurious way.
    • usage: "glaucoma is an insidious disease"; "a subtle poison"
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). pernicious. Retrieved September 20, 2026, from http://smartdefine.org/pernicious/definitions/1180626
ChicagoWordNet. 2010. "pernicious" http://smartdefine.org/pernicious/definitions/1180626 (accessed September 20, 2026).
HarvardWordNet 2010, pernicious, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/pernicious/definitions/1180626>.
MLAWordNet. "pernicious" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/pernicious/definitions/1180626>
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