Geek aced law degree, quite superb finals (5)
I believe the answer is:
dweeb
'geek' is the definition.
(I've seen this before)
'aced law degree quite superb finals' is the wordplay.
'finals' indicates one should take the final letters (the final letters).
The final letters of 'aced law degree quite superb' are 'DWEEB'.
(Other definitions for dweeb that I've seen before include "(US) idiot" , "Antisocial guy" , "silly American" , "Insignificant student" , "misfit" .)