Adjective
1. (followed by `of') lacking capacity or ability;
"incapable of carrying a tune""he is incapable of understanding the matter""incapable of doing the work"2. not being susceptible to or admitting of something (usually followed by `of');
"incapable of solution"3. lacking the necessary skill or knowledge etc.;
"an incapable helper"4. (followed by `of') not having the temperament or inclination for;
"simply incapable of lying"5. not meeting requirements;
"unequal to the demands put upon him"