THESAURUS
balefulness, banefulness, communicability, contagiousness, deadliness, destructiveness, detrimentalness, harmfulness, hurtfulness, infectiousness, infectivity, injuriousness, lethality, malignance, malignancy, malignity, mischievousness, noisomeness, noxiousness, ominousness, perniciousness, poison, poisonousness, unhealthiness, venom, venomousness, viciousness, virulence, virulency
ROGET THESAURUS
Insalubrity
N
insalubrity, unhealthiness, nonnaturals, plague spot, malaria, death in the pot, contagion,
toxicity, insalubrious, unhealthy, unwholesome, noxious, noisome, morbific, morbiferous, mephitic, septic, azotic, deleterious, pestilent, pestiferous, pestilential, virulent, venomous, envenomed, poisonous, toxic, toxiferous, teratogenic, narcotic, contagious, infectious, catching, taking, epidemic, zymotic, epizootic, innutritious, indigestible, ungenial, uncongenial, deadly.