5
incompetence(noun, defect, imperfection, limitation, inadequacy)
5
inferiority(noun, weakness, want, need, loss)
5
loss(noun, decline, ruin, defeat, damage)
5
neglect(noun, decline, failure, mess, lack)
5
omission(noun, failure, lack, avoidance, evasion)
5
skimpiness(noun, failure, need, lack, failing)
5
smallness(lack, scarcity, insufficiency, inferiority, scantiness)
5
underage(noun, weakness, condition, loss, excess)
4
drought(noun, lack, shortage, scarcity, nonexistence)
4
bankruptcy(noun, decline, ruin, defeat, pass)
4
bug(noun, weakness, crack, informal, fault)
4
defalcation(noun, weakness, failure, lack, loss)
4
defection(noun, failure, failing, rejection, withdrawal)
4
defectiveness(loss, defect, imperfection, inadequacy, inability)
4
deprivation(noun, trouble, defeat, difficulty, bar)
4
dereliction(noun, decline, neglect, failure, mess)
4
destitution(noun, defeat, pass, difficulty, distress)
4
fewness(lack, scarcity, scantiness, rareness)
4
hiatus(noun, incompleteness)
4
impairment(noun, hurt, defeat, fall, damage)
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APASmart Define. (2015). deficiency thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/deficiency/thesaurus/synonyms
ChicagoSmart Define. 2015. "deficiency thesaurus" https://smartdefine.org/deficiency/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, deficiency thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/deficiency/thesaurus/synonyms>.
MLASmart Define. "deficiency thesaurus" 23 December 2015. Web. 20 September 2026. <https://smartdefine.org/deficiency/thesaurus/synonyms>