35 entries under insufficiency topic. ×

12
inability(noun, weakness, skill, lack, failing)
9
incompetence(noun, weakness, skill, failure, lack)
7
incapacity(noun, weakness, skill, failure, lack)
7
ineptitude(noun, weakness, skill, failure, lack)
6
inadequacy(noun, weakness, skill, failure, lack)
6
inefficiency(noun, weakness, skill, failure, lack)
4
inaptness(defect, deficiency, impropriety, inadequacy, shortage)
3
incompetency(noun, weakness, lack, failing, defect)
2
inadequateness(defect, deficiency, imperfection, inadequacy, shortage)
2
ineffectiveness(noun, weakness, skill, failure, lack)
1
blemish(defect, deficiency, imperfection, limitation, inadequacy)
1
dearth(defect, deficiency, imperfection, inadequacy, shortage)
1
defalcation(defect, deficiency, imperfection, inadequacy, shortage)
1
defect(noun, failure, lack, failing, deficiency)
1
defectiveness(defect, imperfection, inadequacy, shortage, inability)
1
deficiency(defect, imperfection, limitation, inadequacy, shortage)
1
deficit(defect, deficiency, imperfection, inadequacy, shortage)
1
drawback(noun, trouble, bother, disturbance, lack)
1
failing(defect, deficiency, imperfection, limitation, inadequacy)
1
faultiness(defect, deficiency, imperfection, inadequacy, shortage)
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APASmart Define. (2015). unfitness thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/unfitness/thesaurus/synonyms
ChicagoSmart Define. 2015. "unfitness thesaurus" https://smartdefine.org/unfitness/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, unfitness thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/unfitness/thesaurus/synonyms>.
MLASmart Define. "unfitness thesaurus" 14 April 2015. Web. 1 October 2026. <https://smartdefine.org/unfitness/thesaurus/synonyms>