| languor(noun, weakness, fault, lack, lapse) | |
| lapse(noun, drop, fall, weakness, fault) | |
| lassitude(noun, weakness, delicacy, inadequacy, shakiness) | |
| latter part of animate life(life, period, age) | |
| lees of life(life, period, age) | |
| lessening(noun, drop, fall, failure, deterioration) | |
| liking(noun, weakness, fault, lack, lapse) | |
| malaise(noun, weakness, delicacy, inadequacy, shakiness) | |
| maturity | |
| metabolic psychosis | |
| moral insanity | |
| neglect(noun, neglect) | |
| neglectfulness(noun, neglect) | |
| negligence(noun, neglect) | |
| old bones(life, period, age) | |
| old order | |
| old style | |
| on the skids(noun, expression, idiom, drop, fall) | |
| organic psychosis | |
| paralytic dementia |
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| APA | Smart Define. (2015). senility thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/senility/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "senility thesaurus" https://smartdefine.org/senility/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, senility thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/senility/thesaurus/synonyms>. |
| MLA | Smart Define. "senility thesaurus" 23 December 2015. Web. 22 September 2026. <https://smartdefine.org/senility/thesaurus/synonyms> |