Clairvoyant, visionary (4)
I believe the answer is:
seer
This clue is a double definition.
'clairvoyant' is the first definition.
(I've seen this in another clue)
'visionary' is the second definition.
(I know that visionary can be written as seer)
(Other definitions for seer that I've seen before include "Prophet or clairvoyant" , "One has unusual foresight" , "I envisage" , "Wise person" , "Oracle or prophet" .)