| ineptitude(noun, defect, imperfection, limitation, inadequacy) | |
| insubstantiality(noun, weakness, failing, infirmity, fragility) | |
| kink(noun, weakness, crack, fault, blemish) | |
| lacuna | |
| liability | |
| meanness | |
| mediocrity | |
| minus(noun, trouble, difficulty, weakness, bar) | |
| miscarriage(noun, decline, ruin, defeat, collapse) | |
| non-existence | |
| nonattendance(avoidance, evasion, nonpayment) | |
| paltriness(lack, scarcity, scantiness, rareness) | |
| part(noun, incompleteness) | |
| peccadillo(noun, wrong, evil, weakness, fault) | |
| pittance(noun, insufficiency) | |
| poorness(noun, pass, difficulty, distress, weakness) | |
| powerlessness(noun, weakness, fault, lack, lapse) | |
| problem(noun, trouble, difficulty, weakness, bar) | |
| puniness(noun, disorder, weakness, fault, failing) | |
| rareness(lack, shortage, scarcity, insufficiency, scantiness) |
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| APA | Smart Define. (2015). deficiency thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/deficiency/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "deficiency thesaurus" https://smartdefine.org/deficiency/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, deficiency thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/deficiency/thesaurus/synonyms>. |
| MLA | Smart Define. "deficiency thesaurus" 23 December 2015. Web. 24 September 2026. <https://smartdefine.org/deficiency/thesaurus/synonyms> |