College official keeps me humble (6)
I believe the answer is:
demean
'humble' is the definition.
(demeaning is a kind of humbling)
'college official keeps me' is the wordplay.
'college official' becomes 'dean' (I've seen this before).
'keeps' is an insertion indicator.
'dean' going around 'me' is 'DEMEAN'.
(Other definitions for demean that I've seen before include "Degrade, humiliate" , "Degrade, abase" , "Cause to lose respect" , "Lower in reputation, humiliate" , "Lower in dignity or reputation" .)