lab·y·rin·thine 
(lăb′ə-rĭnthĭn, -thēn′) or lab·y·rin·thi·an (-thē-ən)
(lăb′ə-rĭnthĭn, -thēn′) or lab·y·rin·thi·an (-thē-ən)adj.
Relating to, resembling, or constituting a labyrinth: "the labyrinthine corridors ... of bureaucratic red tape" (William H. Hallahan).