Diabólico (en. Diabolical)
/dja.βoˈli.ko/
Slang Meanings
A complicated or hard-to-resolve situation.
That problem is a true diabolical one.
Ese problema es un verdadero diabólico.
Something that is astonishingly bad or negative.
That party was diabolical, I won't do it again.
Esa fiesta fue diabólica, no lo volveré a hacer.