Roguery, evidently, is more than evil (7)
I believe the answer is:
devilry
'roguery' is the definition.
(synonyms)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for devilry that I've seen before include "wicked stuff" , "wicked behaviour" , "wickedness" , "It's sheer malice" , "reckless mischief?" .)