senile
US
UK senile adj: (geriatric, elderly)
SC 老的 lǎo de
SC 年老的 lǎo de ，nián lǎo de
SC 年老的 lǎo de ，nián lǎo de
The cafeteria was filled with senile, gray-haired people.
senile adj: (caused by old age)
SC 衰老的 shuāi lǎo de
That doctor specializes in senile disorders.
senile adj: (suffering from dementia)
SC 老年痴呆的 lǎo nián chī dāi de
We are worried that Grandpa may be senile; he is increasingly forgetful.
senile dementia n: (mental deterioration in old age)
SC 老年性痴呆 lǎo nián xìng chī dāi
As the years have passed, my grandfather's senile dementia has gotten worse.