unleashable

adjective2

1. •
   Unable to be leashed, or restrained

   • […]Waters was falling into the psychological traps he'd been limning so effectively in the establishment figures he railed against: he was arrogant and unleashable[…] — 1988
2. •
   Able to be unleashed

   • And when the efficiency or supply of coal, gas, and water came into doubt, the realm below was once again scoured for unleashable energy. — 2001