perniciousness

English Thesaurus

1. grave harmfulness or deadliness (noun.attribute)

hypernym	:	morbidity, morbidness, unwholesomeness,
definition	:	the quality of being unhealthful and generally bad for you (noun.attribute)

derivation	:	insidious, pernicious, subtle,
definition	:	working or spreading in a hidden and usually injurious way (adj.all)

derivation	:	baneful, deadly, pernicious, pestilent,
definition	:	exceedingly harmful (adj.all)

derivation	:	insidious, pernicious, subtle,
definition	:	working or spreading in a hidden and usually injurious way (adj.all)

derivation	:	baneful, deadly, pernicious, pestilent,
definition	:	exceedingly harmful (adj.all)