Lack of ability, legal qualification, or fitness to discharge the required duty In New York, the word “incompetency” is used in a special sense to designate the condition or legal status of a person who is unable or unfitted to manage his own affairs by reason of insanity, imbecility, or feeble-mind edness, and for Whom, therefore, a committee may be appointed; and such a person is designated an “incompetent.” As applied to evidence, the word “incompetent” means not proper to be received; inadmissible, as distinguished from that which the court should admit for the consideration of the Jury, though they may not find it worthy of credence.
In French law. Inability or insufficiency of a judge to try a cause brought before him, proceeding from lack of jurisdiction.