the GNU version of the Collaborative International Dictionary of English
n. Vitiosity.
The Century Dictionary and Cyclopedia
n. Depravity; viciousness; vice; lack of purity, as of language or style. Also spelled vitiosity.
Word Usage
"After 6 day war there was an organized government anti-semitic campaign in Soviet Union, too, and I remember it quite well, but it never achieved the level of viciosity which such campaign took in Poland."