se·nil·i·ty
noun/səˈnɪləti/
/səˈnɪləti/
[uncountable]- the condition of being senile (= behaving in a confused or strange way, and being unable to remember things, because you are old)
衰老的；年老糊涂的 - an old man on the verge of senility
渐显龙钟之态的老年人
- an old man on the verge of senility