Place to return in a stupor (3)
I believe the answer is:
put
'place' is the definition.
(I know that place can be written as put)
'return in a stupor' is the wordplay.
'return' says the letters should be written in reverse.
'in' indicates the answer is hidden within the clue.
'tup' is hidden in the letters of 'stupor'.
'tup' written backwards gives 'PUT'.
'to' acts as a link.
(Other definitions for put that I've seen before include "Place; placed" , "Place in a position" , "Set (in place)" , "Place in a location" , "Place, lay" .)