Disapprove of talked about dessert that keeps coming back (9)
I believe the answer is:
boomerang
'back' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Perhaps there's an association between them I don't understand?
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for boomerang that I've seen before include "Aboriginal throwing stick" , "Backfire" , "Aboriginal weapon" , "Self-returning missile" , "Australian throwing stick" .)