senile
senile definition
se·nile (sē′nīl′, sen′īl′)
adjective
- of, typical of, or resulting from old age: now chiefly medical
- showing the marked deterioration often accompanying old age, esp. mental impairment characterized by confusion, memory loss, etc.
- Geol. nearing the end of an erosion cycle
Etymology: L senilis < senex, old: see senate
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