Definition of viciousness:
ill-doing, delinquency, fault, despite, malignity, spleen, attitude, depravity, iniquity, immorality, malignance, ill will, savagery, poisonousness, wantonness, guilt, offense, cruelness, venomousness, unrighteousness, inhumanity, vice, barbarousness, wrong, sin, misdeed, fiendishness, barbarism, barbarity, sadism, criminality, atrociousness, brutality, crime, ferociousness, despitefulness, wrong-doing, ungodliness, inhumanness, truculence, savageness, heartlessness, spite, atrocity, transgression.
- "Roman Women Woman: In All Ages and in All Countries, Volume 2 (of 10)", Alfred Brittain.
- "The Players", Everett B. Cole.
- "The Danger Mark", Robert W. Chambers.