Not able; lacking a certain ability.
"Are you unable to mind your own business or something?"
To render unable; disable
Unable, not able.
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.
(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"