Religious teaching place, centre's regularly full (7)
I believe the answer is:
'full' is the definition.
('replete' can be a synonym of 'full')
'religious teaching place centre's regularly' is the wordplay.
'religious teaching' becomes 're' (religious education).
'place' becomes 'pl' (I've seen this in other clues**).
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
The alternating letters of 'centres' are 'ete'.
(Other definitions for replete that I've seen before include "Filled, well supplied" , "Filled to satiety" , "Full - pet leer (anag)" , "Fully satisfied" , "Stuffed, gorged, sated" .)