Credit one, myself, with felony (5)
I believe the answer is:
crime
'felony' is the definition.
(I've seen this in another clue)
'credit one myself' is the wordplay.
'credit' becomes 'cr' (abbreviation).
'one' becomes 'i' (Roman numeral).
'myself' becomes 'me'.
'cr'+'i'+'me'='CRIME'
'with' is the link.
(Other definitions for crime that I've seen before include "Illegal act" , "Illegal deed" , "Murder, perhaps" , "Illegal activity" , "Killing, for example" .)