2
abnormality(noun, disorder, sick, sickness)
2
debility(noun, disorder, disease, weakness, condition)
2
defect(noun, upset, disorder, weakness, condition)
2
breakdown(noun, attack, disorder, disease, fit)
2
collapse(noun, disorder, disease, condition, defect)
2
curse(noun, upset, disease, complaint)
2
distress(noun, trouble, hurt, disorder, defeat)
2
frailness(noun, weakness, sickness, frailty)
2
gripe(noun, hurt, distress, pain, protest)
2
infliction(noun, hurt, damage, disease, harm)
2
prostration(noun, disease, sickness, infection)
2
relapse(noun, disease, sickness, spell, complaint)
2
seediness(roughness, sickliness)
2
seizure(noun, attack, disorder, disease, fit)
2
weakness(noun, disorder, sickness, infirmity, frailty)
1
trouble(noun, health, upset, weak, disorder)
1
attack(noun, health, disorder, disease, fit)
1
fever(noun, health, hurt, disorder, disease)
1
complication(noun, health, disease, feelings, states)
1
symptom(noun, disease, characteristics, situations, properties)
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APASmart Define. (2016). illness thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/illness/thesaurus/synonyms
ChicagoSmart Define. 2016. "illness thesaurus" https://smartdefine.org/illness/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, illness thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/illness/thesaurus/synonyms>.
MLASmart Define. "illness thesaurus" 29 February 2016. Web. 22 September 2026. <https://smartdefine.org/illness/thesaurus/synonyms>