the state or quality of being utterly evil. no one can question the sheer vileness of this act of terrorism.

Is there such a word as vileness?

Meaning of vileness in English

the quality of being very unpleasant, and usually immoral and unacceptable: He is an ambitious man, not evil, but capable of occasional vileness. There is a culture of vileness in sport.

Who is a vile person?

Vile is something or someone so morally wrong or offensive as to be thoroughly disgusting. Are you appalled by someone's sordid, despicable, ugly and just generally awful behavior?