GNU Collaborative International Dictionary of English

last match results

Found one definition

1.       
   Unable (?), a. 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”.
   
   [1913 Webster]
   
   Sapless age and weak unable limbs. Shak.
   
   [1913 Webster]