Diabolic

This god is cruel, nervous, and diabolic, with yellow wrinkly skin, small squinty eyes, a triangular nose, and bright teeth.

Tom masterminded a diabolic plot to kill his wife.

diabolic magic square

"The Sovereign Council of Wisdom," or the Order of Palladium, founded in Paris, was a diabolic order claiming masonic origin.

a cunning and diabolic plot

fires lit up a diabolic scene