Lack of de use or exercise of some thing o practice. It is of interest to the Law School by effects that may have the disuse of a custom
0 law. For the mayoria of the legislations, one law can only be repealed by another law, and, in this sense, its disuse will not affect its validity nor its effectiveness. Without embargo, in branches such as the commercial, the custom It has fundamental importance as a source of Law School and, consequently, disuse is cause of repeal.