Webster's Revised Unabridged Dictionary · 1913

Unskillful

Unskillful , adjective

[Spelt also unskilful.]

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. — Shakespeare