incompetent (
http://definr.com/incompetent)
adj 1: not qualified or suited for a purpose; "an incompetent
secret service"; "the filming was hopeless
incompetent" [ant:
competent]
2: showing lack of skill or aptitude; "a bungling workman";
"did a clumsy job"; "his fumbling attempt to put up a
shelf" [syn:
bungling,
clumsy,
fumbling]
3: not doing a good job; "incompetent at chess" [syn:
unskilled]
4: not meeting requirements; "unequal to the demands put upon
him" [syn:
incapable,
unequal to(p)]
n : someone who is not competent to take effective action [syn:
incompetent person]