<p><strong>Noun</strong></p><ul><li>inability or unwillingness to think or act rationally, reasonably, or sensibly; irrationality</li><li>lack of reason or sanity</li><li>madness</li><li>confusion</li><li>disorder</li><li>chaos</li><li>a world torn by unreason</li></ul><p><strong>Verb</strong></p><ul><li>to upset or disrupt the reason or sanity of</li><li>The devious plot soon unreasoned the general.</li></ul>