Definitions of perniciousness. noun. grave harmfulness or deadliness. synonyms: toxicity. morbidity, morbidness, unwholesomeness.
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1. highly injurious or destructive : deadly 2. archaic : wicked perniciously adverb perniciousness noun Did you know? insidious, sinister, or pernicious?
adjective causing insidious harm or ruin; ruinous; injurious; hurtful: pernicious teachings; a pernicious lie.
Synonyms for PERNICIOUS: harmful, dangerous, detrimental, damaging, adverse, bad, poisonous, deleterious; Antonyms of PERNICIOUS: benign, harmless, ...
having a very harmful effect or influence: The cuts in government funding have had a pernicious effect on local health services.
The earliest known use of the noun perniciousness is in the late 1500s. OED's earliest evidence for perniciousness is from 1581, in a translation by James ...
PERNICIOUS definition in American English - Collins Dictionary
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1. causing great injury, destruction, or ruin; fatal; deadly 2. Rare wicked; evil SYNONYMY NOTE: pernicious applies to that which does great harm by ...
perniciousness · detriment · hurt · ill · immorality · infliction · iniquity · marring · mischance · misfortune · noxiousness · outrage · prejudice · ravage ...
Pernicious - Definition, Meaning & Synonyms - Vocabulary.com
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Pernicious means harmful and subtle, such as a poison gas that causes illness in those exposed to it over the course of years.
There are three meanings listed in OED's entry for the adjective pernicious. See 'Meaning & use' for definitions, usage, and quotation evidence.