Far-seeing prince set out (9)
I believe the answer is:
prescient
'far-seeing' is the definition.
Both the definition and answer are adjectives.
Maybe you can see a link between them that I don't see?
'prince set out' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'prince'+'set'='princeset'
'princeset' with letters rearranged gives 'PRESCIENT'.
Can you help me to learn more?
(Other definitions for prescient that I've seen before include "Showing knowledge of events before they take place" , "Reinspect, having foresight" , "Having foreknowledge" , "Able to predict events" , "Having second sight" .)