desinscribir

An administrative verb for removing someone from a list or registry they'd been inscribed on — desinscribirse de un curso, desinscribir a alguien del padrón. The direct opposite of inscribir, and common on forms and administrative websites.

• Puedes desinscribirte del curso antes de que empiece. — You can unregister from the course before it starts.
• La oficina desinscribió al alumno por falta de pago. — The office withdrew the student's registration for non-payment.
• Se desinscribió de la lista de correo. — He unsubscribed from the mailing list.

Using desinscribirse for something you were never formally registered for — it specifically undoes an inscripción, so it sounds odd applied outside that formal-registration context, where darse de baja is more natural.

Often confused with inscribir.