Related Clues:

• Perfidious
• It's not a good thing
• Impressive
• Stephen King topic
• Blackhearted
• Far from genteel
• Diabolical doings
• Vicious
• Mean business
• Good fighter?
• '___ falls on him who goes to seek it': Cervantes
• Hardly a good thing
• Good opponent
• Depravity
• Ahriman's forte