/ˈsi:naɪl ||; ˈsinaɪl/adj behaving in a confused and strange way, and unable to remember things because of old age （年老时）胡涂，健忘，衰老: I think she's going senile. 我觉得她开始老糊涂了。 ➔senility /səˈnɪləti ||; səˈnɪlətɪ/ noun [U]