fiendishness

/ˈfiːndɪʃnəs/
noun
  1. Extreme cruelty or wickedness.
    • The story describes the fiendishness of the ancient tyrant.
    • She couldn't believe the fiendishness of the prank her classmates played.
    • The villain's fiendishness shocked even the hardened detectives.
  2. Great cleverness or ingenuity, often in a mischievous or tricky way.
    • The escape room was famous for the fiendishness of its clues.
    • His plan had a certain fiendishness that impressed his rivals.
    • The puzzle's fiendishness made it a favorite among experts.
What does "fiendishness" mean? | whatsthatwordmean | whatsthatwordmean