n. The quality or state of being noxious or hurtful; hurmfulness; perniciousness: as, the noxiousness of foul air.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the quality of being noxious
Word Usage
"The dangers of such Light Tea is that at first it seems rather bland and doesn't call much attention to itself, which means that people may little or no attention to its ultimate noxiousness."