Academic not fully supporting head of faculty (4)
I believe the answer is:
prof
'academic' is the definition.
'supporting head of faculty' is the wordplay.
'supporting' becomes 'pro' (I've seen this in other clues).
'head of' suggests taking the first letters.
The first letter of 'faculty' is 'f'.
'pro'+'f'='PROF'
'not fully' is the link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for prof that I've seen before include "Top academic (informal)" , "head of dept at uni" , "Academic briefly" , "teacher" , "One holding chair" .)