5
poisonous(adjective, harm, negative, injury)
5
ruinous(adjective, harm, negative, injury)
5
toxic(adjective, harm, negative, injury)
5
unhealthy(adjective, harm, negative, injury)
2
surgical(adjective, medicine, operation, surgery)
2
abusive(adjective, harm, negative, injury)
2
baleful(adjective, harm, negative, injury)
2
calamitous(adjective, harm, negative, injury)
2
cataclysmic consumptive(adjective, harm, negative, injury)
2
catastrophic(adjective, harm, negative, injury)
2
corroding(adjective, harm, negative, injury)
2
corrupting(adjective, harm, negative, injury)
2
crippling(adjective, harm, negative, injury)
2
deadly(adjective, harm, negative, injury)
2
dire(adjective, harm, negative, injury)
2
disastrous(adjective, harm, negative, injury)
2
distressing(adjective, harm, negative, injury)
2
harassing(adjective, harm, negative, injury)
2
incendiary(adjective, harm, negative, injury)
2
inimical(adjective, harm, negative, injury)
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APASmart Define. (2015). medical thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/medical/thesaurus/antonyms
ChicagoSmart Define. 2015. "medical thesaurus" https://smartdefine.org/medical/thesaurus/antonyms (accessed September 29, 2026).
HarvardSmart Define 2015, medical thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/medical/thesaurus/antonyms>.
MLASmart Define. "medical thesaurus" 13 April 2015. Web. 29 September 2026. <https://smartdefine.org/medical/thesaurus/antonyms>