9
sickness(noun, disorder, illness, defect, affliction)
6
insubstantiality(noun, strong, disorder, weakness, condition)
5
debility(noun, strong, weakness, condition, failing)
5
delicacy(noun, strong, disorder, weakness, condition)
5
disease(noun, weakness, failing, sickness, affliction)
5
frailty(noun, strong, disorder, weakness, condition)
5
infirmity(noun, strong, disorder, weakness, condition)
4
ailment(noun, disorder, weakness, failing, defect)
4
derangement(noun, insanity)
4
disorder(noun, weakness, failing, sickness, affliction)
4
flimsiness(noun, strong, disorder, weakness, condition)
4
folly(noun, idea, nonsense, foolishness, madness)
4
fragility(noun, strong, disorder, weakness, condition)
4
puniness(noun, strong, weakness, condition, failing)
4
unsubstantiality(noun, strong, disorder, weakness, condition)
3
decrepitude(noun, strong, disorder, weakness, condition)
3
defect(noun, disorder, weakness, condition, fault)
3
deficiency(noun, disorder, weakness, crack, fault)
3
feebleness(noun, strong, disorder, weakness, condition)
3
frailness(noun, strong, disorder, weakness, condition)
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APASmart Define. (2016). unsoundness thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/unsoundness/thesaurus/synonyms
ChicagoSmart Define. 2016. "unsoundness thesaurus" https://smartdefine.org/unsoundness/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, unsoundness thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/unsoundness/thesaurus/synonyms>.
MLASmart Define. "unsoundness thesaurus" 29 February 2016. Web. 21 September 2026. <https://smartdefine.org/unsoundness/thesaurus/synonyms>