troglodytic

from The Collaborative International Dictionary of English v.0.48

Troglodytic \Trog`lo*dyt"ic\, Troglodytical \Trog`lo*dyt"ic*al\,
   a. [L. troglodyticus, Gr. ?.]
   Of or pertaining to a troglodyte, or dweller in caves.
   [1913 Webster]