a. [ L. incompetens: cf. F. incompétent. See In- not, and Competent. ] [ 1913 Webster ]

1. Not competent; wanting in adequate strength, power, capacity, means, qualifications, or the like; incapable; unable; inadequate; unfit. [ 1913 Webster ]

Incompetent to perform the duties of the place. Macaulay. [ 1913 Webster ]

2. (Law) 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. [ 1913 Webster +PJC ]

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. Bacon. [ 1913 Webster ]

3. Not lying within one's competency, capacity, or authorized power; not permissible.

Syn. -- Incapable; unable; inadequate; insufficient; inefficient; disqualified; unfit; improper. -- Incompetent, Incapable. Incompetent is a relative term, denoting a lack of the requisite qualifications for performing a given act, service, etc.; incapable is absolute in its meaning, denoting lack of power, either natural or moral. We speak of a man as incompetent to a certain task, of an incompetent judge, etc. We say of an idiot that he is incapable of learning to read; and of a man distinguished for his honor, that he is incapable of a mean action. [ 1913 Webster ]

adv. In an competent manner; inadequately; unsuitably. [ 1913 Webster ]