Incapable

What does INCAPABLE mean?

1. adjective

   (followed by `of') lacking capacity or ability

   “incapable of carrying a tune”

2. adjective

   not being susceptible to or admitting of something (usually followed by `of')

   “incapable of solution”

3. adjective

   (followed by `of') not having the temperament or inclination for

   “simply incapable of lying”

4. adjective

   not meeting requirements

   “unequal to the demands put upon him”

Definitions from WordNet 3.1, Princeton University.