163 entries under noun topic. ×

10
irrationality(absurdity, inconsistency, unsoundness, implausibility)
7
infirmity(difficulty, weakness, fault, lack)
6
disability(disadvantage, restriction, impotence, infirmity)
6
preposterousness(absurdity, implausibility)
5
weakness(difficulty, fault, failing, flaw)
4
absurdity(absurdity, implausibility)
4
debility(difficulty, weakness, fault, lack)
4
frailty(difficulty, weakness, fault, lack)
4
inability(disadvantage, restriction, impotence, infirmity)
4
incapacity(disadvantage, restriction, impotence, infirmity)
4
incongruity(absurdity, inconsistency, irrationality)
4
inconsistency(deception, mistake, error, falsehood)
4
invalidness
3
disablement
3
disqualification(disadvantage, restriction, impotence, infirmity)
3
fallacy(deception, mistake, error, deviation)
3
impotence(weakness, fault, lack, lapse)
3
inanity
3
nonsense(absurdity, implausibility)
2
contradiction(absurdity, inconsistency, irrationality)
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APASmart Define. (2015). invalidity thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/invalidity/thesaurus/synonyms
ChicagoSmart Define. 2015. "invalidity thesaurus" https://smartdefine.org/invalidity/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, invalidity thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/invalidity/thesaurus/synonyms>.
MLASmart Define. "invalidity thesaurus" 23 December 2015. Web. 23 September 2026. <https://smartdefine.org/invalidity/thesaurus/synonyms>