The Collaborative International Dictionary of English v.0.48:

fortuneteller \for"tune*tel`ler\ n.
   a person who claims to be able to foretell events in the
   future of another person.

   Syn: fortune teller, fortune-teller.
        -- for"tune*tel`ling, n.
        [WordNet 1.5 +PJC]

WordNet (r) 3.0 (2006):

fortuneteller
    n 1: a person who foretells your personal future [syn:
         fortuneteller, fortune teller]