98 entries under noun topic. ×

12
inability(weakness, skill, lack, failing)
11
disability(disadvantage, restriction, infirmity, frailty)
11
impropriety(agree, slip, condition, disagreement)
10
disqualification(weakness, skill, failure, disadvantage)
10
incapability(weakness, skill, failure, shortcoming)
10
unsuitability(agree, slip, condition, usual)
9
incompetence(weakness, skill, failure, lack)
8
impotence(weakness, skill, failure, shortcoming)
8
inappropriateness(agree, slip, condition, usual)
7
inaptitude(weakness, skill, failure, disagreement)
7
incapacity(weakness, skill, failure, lack)
7
ineptitude(weakness, skill, failure, lack)
6
feebleness(weakness, hopelessness, inability, helplessness)
6
inadequacy(weakness, skill, failure, lack)
6
inconvenience(trouble, bother, inexpedience, untimeliness)
6
inefficiency(weakness, skill, failure, lack)
6
ineptness(weakness, skill, failure, shortcoming)
6
inexpedience
5
poor shape(expression, idiom)
5
unseemliness(agree, slip, condition, usual)
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APASmart Define. (2015). unfitness thesaurus. Retrieved October 2, 2026, from https://smartdefine.org/unfitness/thesaurus/synonyms
ChicagoSmart Define. 2015. "unfitness thesaurus" https://smartdefine.org/unfitness/thesaurus/synonyms (accessed October 2, 2026).
HarvardSmart Define 2015, unfitness thesaurus, Smart Define, viewed 2 October, 2026, <https://smartdefine.org/unfitness/thesaurus/synonyms>.
MLASmart Define. "unfitness thesaurus" 14 April 2015. Web. 2 October 2026. <https://smartdefine.org/unfitness/thesaurus/synonyms>