"senile" in Chinese (Simplified)
年老糊涂老年性
Definition
用来形容人（通常是老人），因为年老而出现精神衰弱或记忆力减退。
Usage Notes (Chinese (Simplified))
常用于形容老人因年老导致的精神衰退，在正式或尊重的场合更推荐用“记忆力减退”、“认知能力下降”。“老年痴呆症”是相关常见表达。避免对年轻人使用。
Examples
My grandfather is becoming senile and sometimes forgets my name.
我的祖父变得有些**年老糊涂**，有时会忘记我的名字。
Some elderly people may develop senile dementia.
有些老人可能会患上**老年性**痴呆。
The doctor explained that his forgetfulness was due to senile changes.
医生解释说他的健忘是由于**老年性**变化。
Don’t call your parents senile just because they forgot their keys!
父母只是忘记了钥匙，别随便说他们**老糊涂**！
People sometimes joke about feeling senile when they forget small things.
人们有时会开玩笑说自己忘事就像变**糊涂**了一样。
He may sound senile, but he still remembers all the important details.
他可能听起来有点**糊涂**，但重要的细节他都还记得。