supersecure (not comparable)
- Having an extremely high level of security.
2009, January 24, “Mark Mazzetti”, in Where Will Guantánamo Detainees Go?:
- Those include 9 detention centers that hold defendants awaiting trial, 21 high-security penitentiaries and a supersecure prison in Florence, Colo., where several convicted terrorists are already locked up.
having an extremely high level of security