unable unable /əˈneɪbəl/

adjective

1. () (usually followed by 'to') not having the necessary means, skill or know-how  ( unable )
   (usually followed by 'to') not having the necessary means, skill or know-how
    Unable to get to town without a car
   unable to get to town without a car
    Unable to obtain funds
   unable to obtain funds
   
2. () (usually followed by 'to') lacking necessary physical or mental ability  ( unable )
   (usually followed by 'to') lacking necessary physical or mental ability
    Dyslexics are unable to learn to read adequately
   dyslexics are unable to learn to read adequately
    The sun was unable to melt enough snow
   the sun was unable to melt enough snow
   
3. Lacking in power or forcefulness  ( ineffective , ineffectual , unable )
   lacking in power or forcefulness
    An ineffectual ruler
   an ineffectual ruler
    Like an unable phoenix in hot ashes
   like an unable phoenix in hot ashes