senile
01
老衰した, ぼけた
related to or affected by old age, typically implying a decline in mental faculties and physical abilities
例
The elderly man 's senile forgetfulness often led him to misplace his belongings around the house.
その老人の老人性の物忘れは、しばしば家の中で自分の持ち物を置き忘れる原因となった。
