Stunt that may backfire just the same? (4)
I believe the answer is:
deed
'stunt' is the definition.
(thesaurus)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for deed that I've seen before include "Intentional action" , "A conscious action" , "Something done" , "Feat" , "Document showing ownership" .)