Limit studies with tutor (9)
I believe the answer is:
constrain
'limit' is the definition.
(constraining is a kind of limiting)
'studies with tutor' is the wordplay.
'studies' becomes 'cons' (conning is a kind of studying**).
'with' says to put letters next to each other.
'tutor' becomes 'train' (I've seen this before).
'cons'+'train'='CONSTRAIN'
(Other definitions for constrain that I've seen before include "Restrict the extent of" , "Severely restrict" , "Restrict scope of (an activity)" , "Compel towards a course of action" , "Confine, limit" .)