Look after intelligence (4)
I believe the answer is:
mind
I believe this is a double definition.
'look after' is the first definition.
(I've seen this in another clue)
'intelligence' is the second definition.
(mind is a kind of intelligence)
(Other definitions for mind that I've seen before include "Seat of the faculty of reason" , "Take offence (at)" , "Object to; take care of" , "This can be made up" , "Inclination" .)