Indulges, with "on” (5)
I believe the answer is:
dotes
'indulges with on' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for dotes that I've seen before include "Shows great fondness, perhaps for spouse" , "Shows excessive love" , "Showers with love" , "Showers affection on" , "-- on, adores" .)