Unregister vs. Deregister
Unregisterverb
(transitive) To undo the process of registration for.
Unregisterverb
(intransitive) To undo a registration process.
Deregisterverb
to unregister
Deregisterverb
to unsubscribe
Deregisterverb
remove from a register
Deregisterverb
remove one's name from a register
