WILDEST

Untamed; not domesticated; specifically, in an unbroken line of undomesticated animals (as opposed to feral, referring to undomesticated animals whose ancestors were domesticated).

"Przewalski's horses are the only remaining wild horses."

From or relating to wild creatures.

"wild honey"

Unrestrained or uninhibited.

"I was filled with wild rage when I discovered the infidelity, and punched a hole in the wall."