Not able; lacking a certain ability.
‘Are you unable to mind your own business or something?’;
Unable, not able.
To render unable; disable
Not able; not having sufficient strength, means, knowledge, skill, or the like; impotent; weak; helpless; incapable; - now usually followed by an infinitive or an adverbial phrase; as, unable for work; unable to bear fatigue.
‘Sapless age and weak unable limbs.’;
(usually followed by `to') not having the necessary means or skill or know-how;
‘unable to get to town without a car’; ‘unable to obtain funds’;
(usually followed by `to') lacking necessary physical or mental ability;
‘dyslexics are unable to learn to read adequately’; ‘the sun was unable to melt enough snow’;
lacking in power or forcefulness;
‘an ineffectual ruler’; ‘like an unable phoenix in hot ashes’;