Level 5 · word 11,543 of 20,000

senile

/ˈsiːˌnaɪl/ American
  • adj. 衰老的, 老年的
Definition
  • adj. mentally or physically weak because of old age
Example
Her grandfather grew senile and often forgot familiar faces.
她的祖父变得老年痴呆,常常认不出熟悉的面孔。