نابکار

nefariously, rotten, dark, dastardly, dishonest, dishonorable, evil, evildoer, faithless, false, malevolent, godless, insidious, knave, Mephistophelean, nasty, nefarious, perfidious, rascal, rascally, renegade, sinister, sinuous, sly, sordid, traitor, treacherous, underhanded, wicked