unspoofable

English

Etymology

From un- +‎ spoofable.

Adjective

unspoofable (comparative more unspoofable, superlative most unspoofable)

1. That cannot be spoofed.
   • 2002 April 15, Network World, volume 19, number 15:

     In the second half of this year, we'll be introducing a secure domain name service that ties a certificate to a domain name to make it unspoofable.