Word Study
lethality
CIDE DICTIONARY
lethality, n. [Cf. F. léthalité.].
The quality of being lethal; mortality. [1913 Webster]
THESAURUS
lethality
balefulness, banefulness, deadliness, detrimentalness, fatality, harmfulness, hurtfulness, injuriousness, malignance, malignancy, malignity, mischievousness, mortality, noisomeness, noxiousness, ominousness, perniciousness, poisonousness, toxicity, unhealthiness, venomousness, viciousness, virulenceFor further exploring for "lethality" in Webster Dictionary Online