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noun
Grave harmfulness or deadliness.
synonym: toxicity.
is a specific kind of: morbidity, morbidness, unwholesomeness.
derivation: insidious, pernicious, subtle | baneful, deadly, pernicious, pestilent.
Dutch: schadelijkheid, giftigheid, toxiciteitPolish: toksyczność
Find more on perniciousness elsewhere: etymology - rhymes - Wikipedia.
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