Un·skill·ful a.
  1. Not skillful; inexperienced; awkward; bungling; as, an unskillful surgeon or mechanic; an unskillful logician.
  2. Lacking discernment; injudicious; ignorant.
     Though it make the unskillful laugh, can not but make the judicious grieve.   --Shak.
  -- Un*skill*ful*ly, adv. -- Un*skill*ful*ness, n.
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  unskillfulness
       n : a lack of cognitive skill [ant: skillfulness]