| psychosis | |
| recession(noun, drop, fall, failure, deterioration) | |
| recklessness(noun, neglect) | |
| relapse(noun, drop, fall, failure, deterioration) | |
| retirement age(life, period, age) | |
| ricketiness | |
| ripe old age(expression, idiom) | |
| sear and yellow leaf(life, period, age) | |
| senile debility | |
| senile psychosis | |
| senile weakness | |
| senilism | |
| senior citizenship | |
| seniority | |
| sexual pathology | |
| shoddiness(noun, neglect) | |
| shortcoming(noun, weakness, fault, lack, lapse) | |
| sickliness(noun, weakness, delicacy, inadequacy, shakiness) | |
| situational psychosis | |
| skids(noun, drop, fall, failure, deterioration) |
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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> |