unauthorized,adj. Done without authority; specif. (of a signature or indorsement), made without actual, implied, or apparent authority. UCC § 1-201(b)(41). [Cases: Principal and Agent 147–162. C.J.S. Agency §§ 110, 122, 166–173, 361–362, 372–377, 379–384, 389, 392, 395–404,407, 410, 420, 422–431, 452–456, 458.]
[Blacks Law 8th]