May border on murder, apparently! (6)
I believe the answer is:
mayhem
'murder apparently' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Perhaps you can see a link between them that I can't see?
'may border on' is the wordplay.
'border' becomes 'hem' (I've seen this before).
'on' says to put letters next to each other.
'may'+'hem'='MAYHEM'
Can you help me to learn more?
(Other definitions for mayhem that I've seen before include "Violent destruction of confusion" , "Violent or damaging action, a crime" , "Havoc, violent disturbance" , "Carnage" , "violence" .)