deregister

This term carries a heavy administrative and bureaucratic tone, typically appearing in legal, academic, or corporate documentation. It describes the formal reversal of a registration process, implying a structured procedure rather than a casual withdrawal. The word suggests a change in official status that often results in the loss of certain rights, privileges, or legal recognitions.

In a professional context, it is often used to describe the dissolution of a business entity or the removal of a professional from a licensed registry. When used intransitively, it emphasizes the actor's agency in opting out of a system, such as a student leaving a university course or a voter removing themselves from a registry.