Whether it was actual ignorance, senility, or some obscure test, it's hard to know.
With senility's fingers at his throat, it was clear that no more movies were going to be made.
Adrift in senility and depression, Hitchcock is dismantling his life, putting it away.
senility se·nil·i·ty (sĭ-nĭl'ĭ-tē)
The state of being senile.
The mental and physical deterioration characteristic of old age.