NOX'IOUSNESS, noun
1. Hurtfulness; the quality that injures, impairs or destroys; insalubrity; as the noxiousness of foul air.
2. The quality that corrupts or perverts; as the noxiousness of doctrines.
Noy, noyance, noyer, noyful, noyous, noysance. [See Annoy and Nuisance.]