Devilment, roguishness (8)
I believe the answer is:
mischief
I believe this is a double definition.
'devilment' is the first definition.
(I know that devilment can be written as mischief)
'roguishness' is the second definition.
(I know that roguishness can be written as mischief)
(Other definitions for mischief that I've seen before include "Monkey business" , "Devilment, roguishness" , "Devilment, impishness" , "bad behaviour" , "Black . . . . . . . . (Evelyn Waugh)" .)