Incompetent /(?)/

In·com·pe·tent

Incompetent

a.
  1. Not competent; wanting in adequate strength, power, capacity, means, qualifications, or the like; incapable; unable; inadequate; unfit.
    Incompetent to perform the duties of the place.
  2. Wanting the legal or constitutional qualifications; inadmissible; as, a person professedly wanting in religious belief is an incompetent witness in a court of law or equity; incompetent evidence; a mentally defective person is incompetent to care for himself and requires a legal guardian. (Law)
    Richard III. had a resolution, out of hatred to his brethren, to disable their issues, upon false and incompetent pretexts, the one of attainder, the other of illegitimation.
  3. Not lying within one's competency, capacity, or authorized power; not permissible.