| affliction(noun, disorder, weakness, fault, illness) | |
| ailing(noun, disorder, weakness, fault, illness) | |
| ailment(noun, disorder, weakness, fault, illness) | |
| amiss | |
| anger(wrong, evil, fault, shortcoming) | |
| apologize | |
| appetite(noun, weakness, fault, lack, lapse) | |
| aridity(noun, pass, difficulty, distress, failure) | |
| arrearage | |
| arrestment | |
| badness | |
| baseness | |
| beguile | |
| blind spot(noun, expression, weakness, fault, failing) | |
| blot(noun, weakness, crack, fault, blemish) | |
| bomb(noun, decline, ruin, defeat, collapse) | |
| botch(noun, decline, ruin, defeat, collapse) | |
| breakdown(noun, decline, ruin, defeat, collapse) | |
| bungle(noun, decline, ruin, defeat, collapse) | |
| bust(noun, decline, ruin, defeat, collapse) |
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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> |