a person who sees; observer.

a person who prophesies future events; prophet

Industry seers predicted higher profits.

a person endowed with profound moral and spiritual insight or knowledge; a wise person or sage who possesses intuitive powers.

a person who is reputed to have special powers of divination, as a crystal gazer or palmist.

noun

augur , channeller , crystal ball gazer , diviner , forecaster , fortune-teller , medium , oracle , palm reader , prophet , psychic , soothsayer , eyewitness , viewer , auspex , foreteller , haruspex , prophesier , prophetess , sibyl , vaticinator , astrologer , clairvoyant , mystic , predictor , prognosticator , sorcerer , sorceress , sybil