79 entries under noun topic. ×

8
toxicity
4
harm(damage, evil, destruction, injury)
4
harmfulness
3
injuriousness(destruction, death, demise, pathology)
3
malignancy
3
sickness(destruction, death, demise, pathology)
3
virulence
2
malignity(evil, wickedness, malice, malevolence)
2
noxiousness(wrong, damage, abuse, evil)
1
abuse(wrong, damage, evil, loss)
1
bacteriology(destruction, death, demise, pathology)
1
balefulness
1
banefulness(wrong, damage, abuse, evil)
1
damage(wrong, abuse, evil, harm)
1
deadliness(destruction, death, demise, pathology)
1
deadness(destruction, death, demise, pathology)
1
deleteriousness(wrong, damage, abuse, evil)
1
detriment(wrong, damage, abuse, evil)
1
disease(destruction, death, demise, pathology)
1
disservice(wrong, damage, abuse, evil)
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APASmart Define. (2015). perniciousness thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/perniciousness/thesaurus/synonyms
ChicagoSmart Define. 2015. "perniciousness thesaurus" https://smartdefine.org/perniciousness/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, perniciousness thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/perniciousness/thesaurus/synonyms>.
MLASmart Define. "perniciousness thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/perniciousness/thesaurus/synonyms>