(1):
(a.) 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.
(2):
(a.) Not lying within one's competency, capacity, or authorized power; not permissible.
(3):
(a.) Not competent; wanting in adequate strength, power, capacity, means, qualifications, or the like; incapable; unable; inadequate; unfit.