Bookish type succeeded, anger being expressed (7)
I believe the answer is:
scholar
'bookish type' is the definition.
(studious or bookish person)
I don't understand the rest of the clue.
(Other definitions for scholar that I've seen before include "Person of learning" , "Academic; pupil" , "Noted academic" , "Subject of poem by 1 across" , "Distinguished academic" .)