Adjust or clash with an erudite person (7)
I believe the answer is:
scholar
'an erudite person' is the definition.
(I've seen this in another clue)
'adjust or clash' is the wordplay.
'adjust' indicates an anagram.
'or'+'clash'='orclash'
'orclash' with letters rearranged gives 'SCHOLAR'.
'with' acts as a link.
(Other definitions for scholar that I've seen before include "Subject of poem by 1 across" , "university type?" , "Noted academic" , "Student or learned person" , "Academic, schoolboy" .)