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1. (adj.) pernicious
causing insidious harm or ruin; ruinous:
a pernicious lie.
2. pernicious
Obs. evil; wicked.
Etymology: (1515–25; < L perniciōsus ruinous =pernici(ēs) ruin (per-per - +-nici-, comb. form of nex death, murder (s. nec-) +-iēs n. suffix) +-ōsus -ous)
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| Definition of 'pernicious' |
Princeton's WordNet |
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1. (adj) baneful, deadly, pernicious, pestilent
exceedingly harmful
2. (adj) insidious, pernicious, subtle
working or spreading in a hidden and usually injurious way
"glaucoma is an insidious disease"; "a subtle poison"
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| Definition of 'pernicious' |
Webster Dictionary |
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1. (adj) pernicious
quick; swift (to burn)
2. (adj) pernicious
having the quality of injuring or killing; destructive; very mischievous; baleful; malicious; wicked
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Definitions of pernicious 
