ca·pa·ble / ˈkāpəbəl/ • adj. (capable of doing something) having the ability, fitness, or quality necessary to do or achieve a specified thing: I'm quite capable of taking care of myself. ∎  able to achieve efficiently whatever one has to do; competent. ∎  open to or admitting of something: the strange events are capable of rational explanation. ∎  ready or inclined to: children capable of murder.DERIVATIVES: ca·pa·bly / -blē/ adv.

capable XVI. — F. — late L. capābilis, f. capere take (see HEAVE); see -ABLE.
Hence capability XVI.