reregister

re- +‎ register

reregister (third-person singular simple present reregisters, present participle reregistering, simple past and past participle reregistered)

1. To register again, or to renew or change one's registration
   • 2007 May 13, Carlotta Gall, “Afghan Legislators Vote Out Foreign Minister”, in New York Times‎:

     Some are refugees who had been in Iran for 25 years and who failed to reregister under a new refugee program.

• registerer