incompetent, incompetent person -- (someone who is not competent to take effective action)
Overview of adj incompetent
The adj incompetent has 5 senses
incompetent, unqualified -- (legally not qualified or sufficient; "a wife is usually considered unqualified to testify against her husband"; "incompetent witnesses")
incompetent -- (not qualified or suited for a purpose; "an incompetent secret service"; "the filming was hopeless incompetent")
bungling, clumsy, fumbling, incompetent -- (showing lack of skill or aptitude; "a bungling workman"; "did a clumsy job"; "his fumbling attempt to put up a shelf")
incompetent, unskilled -- (not doing a good job; "incompetent at chess")
incapable, incompetent, unequal to -- (not meeting requirements; "unequal to the demands put upon him")