Fiendish

Somewhere there, on that desolate plain, was lurking this fiendish man, hiding in a burrow like a wild beast, his heart full of malignancy against the whole race which had cast him out. It needed but this to complete the grim suggestiveness of the barren waste, the chilling wind, and the darkling sky.

Tom is acting fiendish.

He's feeling rather fiendish.

I have come to warn you of a fiendish plot.

What a fiendish trick!

What a fiendish plan!

The detective was puzzled by the fiendish plot to steal the diamonds.

She had a fiendish smile that hinted at a cunning plan.

The exam was filled with fiendish questions that made no sense.

a fiendish crossword puzzle