Bloody spirit gone over because of this perhaps (6)
I believe the answer is:
murder
This clue could be a double definition.
'bloody' is the first definition.
The definition and answer can be both related to change as well as being verbs in their base form.
Maybe you can see a link between them that I can't see?
'spirit gone over because of this perhaps' is the second definition.
The definition suggests a singular noun which matches the answer.
Can you help me to learn more?
(Other definitions for murder that I've seen before include "Red Rum (anag)" , "Deliberate homicide" , "Killing most foul" , "Dispatch" , "a lot of crows" .)