<p><strong>adjective</strong></p><ul><li>not capable.</li><li>not having the necessary ability, qualification, or strength to perform some specified act or function: As an administrator, he is simply incapable.</li><li>without ordinary capability; incompetent.</li></ul><p><strong>noun</strong></p><ul><li>a thoroughly incompetent person, especially one of defective mentality.</li></ul>