Intellectually surpass idiot from Oxford? (6)
I believe the answer is:
outwit
'intellectually surpass' is the definition.
I don't understand the rest of the clue.
(Other definitions for outwit that I've seen before include "Hoodwink" , "Defeat by superior ingenuity" , "Intellectually get the better of" , "Outfox" , "Dupe" .)