adjective \ˌən-ˈā-bəl\

: not able to do something

Full Definition of UNABLE

:  not able :  incapable: as
a :  unqualified, incompetent
b :  impotent, helpless

Examples of UNABLE

  1. I was unable to afford the trip.
  2. He was unable to play tennis after the injury.

First Known Use of UNABLE

14th century


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