seer (n.)

• astrologer
• augur
• authority
• beholder
• bystander
• clairvoyant
• daydreamer
• diviner
• doctor
• dreamer
• elder
• enthusiast
• escapist
• eyewitness
• forecaster
• fortuneteller
• gazer
• geomancer
• guru
• idealist
• intellect
• intellectual
• kibitzer
• looker
• looker-on
• lotus-eater
• mahatma
• mandarin
• master
• mastermind
• mentor
• observer
• ogler
• onlooker
• oracle
• palmist
• perceiver
• percipient
• philosopher
• predictor
• prognosticator
• prophesier
• prophet
• prophetess
• psychic
• pythoness
• rabbi
• romancer
• romantic
• romanticist
• sage
• savant
• scholar
• sibyl
• soothsayer
• spectator
• starets
• thinker
• utopian
• vates
• viewer
• visionary
• watcher
• witness