Love people to accept student authority (6)
I believe the answer is:
oracle
'authority' is the definition.
(oracle can mean an authority on a topic)
'love people to accept student' is the wordplay.
'love' becomes 'o' (love means zero in tennis).
'people' becomes 'race' (people can mean a national group or race).
'to accept' indicates putting letters inside.
'student' becomes 'l' (as in L-plates for learner drivers).
'race' enclosing 'l' is 'racle'.
'o'+'racle'='ORACLE'
(Other definitions for oracle that I've seen before include "Soothsayer" , "Source of prophecies" , "Prophet or sage" , "O, clear off for the Greek wise man" , "Holy place in ancient times where gods prophesied" .)