Rogue, scamp (11)
I believe the answer is:
rapscallion
I believe this is a double definition.
'rogue' is the first definition.
(I know that rogue can be written as rapscallion)
'scamp' is the second definition.
(synonyms)
(Other definitions for rapscallion that I've seen before include "Plain carols (anag) - rogue" , "mischief maker" , "Monkey" , "Terror" , "Disreputable person - local sprain (anag)" .)