rascally


rascally (http://definr.com/rascally)

     adj 1: playful in an appealingly bold way; "a roguish grin" [syn: devilish,
             roguish]
     2: lacking principles or scruples; "the rascally rabble"; "the
        tyranny of a scoundrelly aristocracy" - W.M. Thackaray;
        "the captain was set adrift by his roguish crew" [syn: roguish,
         scoundrelly, blackguardly]