Rogues steal shilling (6)
I believe the answer is:
creeps
'rogues' is the definition.
(both can mean horrible people)
'steal shilling' is the wordplay.
'steal' becomes 'creep' (synonyms).
'shilling' becomes 's'.
'creep'+'s'='CREEPS'
(Other definitions for creeps that I've seen before include "''Tomorrow, and tomorrow, and tomorrow, ... in this petty pace from day to day'' (Macbeth)" , "'Tomorrow, and tomorrow, and tomorrow / . . . . . . in this petty place from day to day' (Macbeth)" , "Moves silently and carefully" , "Moves slowly and stealthily" , "feeling of revulsion" .)