demonic

adjective3

1. •
   Pertaining to demons or evil spirits; demoniac.

   • Convinced that his uncle was a warlock, he rifled through his attic, looking for demonic artifacts.
   • Once he had grasped the controls, he unleashed a demonic laugh that made his hostages shudder.
2. •
   Extremely cruel or evil; abhorrent or repugnant; diabolical.

   • Lifton goes on to argue that they can commit these demonic acts because they rationalize their behaviour. A whole array of rationalizations justified the murder of innocent men, women and children. — 2009
3. •
   Pertaining to daemons in ancient Greek thought; concerning supernatural ‘genius’.

   • Aristotle concedes that the nature of the dream is indeed daemonic [translating dämonischer], but not divine – which might well reveal a profound meaning, if one could hit on the right translation. — 1999