13
mortality(noun, loss, disaster, death, casualty)
11
lethality(noun, quality, condition, disaster, live)
11
virulence(noun, loss, disaster, death, casualty)
9
contamination(noun, disease, infection, virus, unhealthiness)
9
infection(noun, disease, disaster, virus, fatality)
9
insalubrity(noun, unhealthiness, toxicity, noxiousness)
8
death(noun, loss, disaster, catastrophe, demise)
8
disease(noun, destruction, death, demise, infection)
8
fatality(noun, quality, ability, condition, loss)
8
noxiousness(noun, loss, disaster, death, dying)
7
toxicity(noun, unhealthiness, insalubrity, noxiousness)
6
destructiveness(noun, loss, disaster, death, casualty)
6
harmfulness(noun, venomousness, perniciousness, toxicity)
6
malignity(noun, disaster, fatality, mortality, lethality)
5
disaster(noun, loss, death, casualty, fatality)
5
malignancy(noun, unhealthiness, venomousness, perniciousness, harmfulness)
5
necrosis(noun, loss, disaster, catastrophe, death)
5
poisonousness(noun, loss, disaster, death, casualty)
5
violence(noun, force, intensity, fury)
4
accident(noun, loss, disaster, death, casualty)
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APASmart Define. (2015). deadliness thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/deadliness/thesaurus/synonyms
ChicagoSmart Define. 2015. "deadliness thesaurus" https://smartdefine.org/deadliness/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, deadliness thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/deadliness/thesaurus/synonyms>.
MLASmart Define. "deadliness thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/deadliness/thesaurus/synonyms>