woundless

from The Collaborative International Dictionary of English v.0.48

Woundless \Wound"less\, a.
   Free from wound or hurt; exempt from being wounded;
   invulnerable. "Knights whose woundless armor rusts."
   --Spenser.
   [1913 Webster]

         [Slander] may miss our name,
         And hit the woundless air.               --Shak.
   [1913 Webster]