Nevada reduced reported sin (4)
I believe the answer is:
envy
'sin' is the definition.
(I know that envy is a type of deadly sin)
'nevada reduced reported' is the wordplay.
I cannot quite see how this works, but
'nevada' could be 'nv' (abbreviation for the US state) and 'nv' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for envy that I've seen before include "Resentment at another's success" , "Feeling of grudging admiration" , "The green-eyed monster" , "Jealousy, resentment" , "Jealousy, begrudgery" .)