diabolical
/ˌdaɪəˈbɑlɪkəl/
adjective
- Extremely evil or cruel; like the devil.
- The movie's diabolical antagonist was both terrifying and fascinating.
- He had a diabolical laugh that made everyone in the room uncomfortable.
- The villain's diabolical scheme involved poisoning the city's water supply.
- Very clever in a harmful or mischievous way; fiendishly ingenious.
- The escape room had a diabolical design that stumped even the smartest players.
- The puzzle was diabolical, taking hours to solve.
- She came up with a diabolical plan to get back at her brother for hiding her phone.