(n.) The quality of being detrimental; injuriousness.

air badness balefulness banefulness bitchiness contamination cussedness deadliness detrimentalness devilment devilry deviltry evil intent hatefulness health hazard hurtfulness iniquitousness injuriousness insalubriousness insalubrity invidiousness lethality maleficence malice malice aforethought malice prepense maliciousness malignance malignancy malignity meanness menace to health mischievousness nastiness noise pollution noisomeness noxiousness ominousness orneriness pathenogenicity perniciousness poisonousness pollution toxicity unhealthfulness unhealthiness unsalutariness unwholesomeness venomousness viciousness virulence water wickedness