noun

a person who is supposedly able to predict a person’s future by palmistry, using a crystal ball, or similar methods.

he went to a fortune teller to ask for advice

clairvoyant,crystal gazer,psychic,prophet,forecaster of the future,seer,oracle,soothsayer,prognosticator,prophesier,augur,diviner,sibyl,medium,spiritualist,telepathist,telepath,mind reader,palmist,palm reader,chiromancer,astrologer,spaewife,spaeman,haruspex,vaticinator,oracler,chirosophist,spiritist,palmister