diabolical
word
Definition
Extremely evil or cruel; so wicked or clever that it's almost like something a devil would do. Sometimes also used for describing something very tricky or terribly unpleasant.
Usage & Nuances
"Diabolical" is formal or literary and often expresses extreme evil, clever wickedness, or harsh unpleasantness. It can describe people, actions, or even plans or problems (e.g., "diabolical plan"). Sometimes used humorously for things that are just very bad (like "diabolical traffic"). Not for casual use about minor problems.
Example Sentences
She came up with a diabolical puzzle that nobody could solve.
basic
His diabolical grin made everyone nervous.
natural
The villain had a diabolical plan to take over the city.
basic
They described the crime as diabolical.
basic
That movie was full of diabolical twists—I never saw the ending coming!
natural
Whoever designed this traffic system had a diabolical sense of humor.
natural