incapable

adj

1.
(followed by ‘of’) lacking capacity or ability
Antonym:
capable
Derived from:
incapability incapableness
2.
not being susceptible to or admitting of something (usually followed by ‘of’)
Derived from:
incapability
3.
(followed by ‘of’) not having the temperament or inclination for
Antonym:
capable
Derived from:
incapability
4.
not meeting requirements
incompetent unequal to
Derived from:
incapability