Mate stuffs dubbing – bombing (9)
I believe the answer is:
napalming
'bombing' is the definition.
Both the definition and answer are present participle verbs.
Maybe you can see a link between them that I don't see?
'mate stuffs dubbing' is the wordplay.
'mate' becomes 'pal' (both can mean a friend).
'stuffs' is an insertion indicator.
'dubbing' becomes 'naming' (to dub is to give a name).
'pal' inserted inside 'naming' is 'NAPALMING'.
Can you help me to learn more?
(Another definition for napalming that I've seen is " Attacking with bombs".)