atrociousness, atrocity, badness, balefulness, darkness, depravedness, devilishness, diabolism, enormity, evilness, heinousness, iniquitousness, satanism, sinfulness, vileness, wickedness

devilry (or deviltry), fiendishness

cancer, canker, decay, rot, squalor

corruption, debauchery, degeneracy, depravity, indecency, malefaction, perversion, pervertedness, scurrility, scurrilousness

abomination, anathema, taboo (also tabu)