WordNet sense 1 (the quality of being morally wrong in principle or practice):

evilness

WordNet sense 2 (having the nature of vice):

vicious

WordNet sense 3 (morally bad in principle or practice):

wicked, wicked

WordNet sense 4 (morally reprehensible):

ugly, vile

WordNet sense 5 (stemming from evil characteristics or forces; wicked or dishonorable):

dark

WordNet sense 6 (characterized by wickedness or immorality):

bad

WordNet sense 7 (shockingly brutal or cruel):

atrocious, heinous

WordNet sense 8 (morally objectionable behavior):

immorality, iniquity, wickedness

WordNet sense 9 (tending to cause great harm):

harmful, injurious

WordNet sense 10 (evil or harmful in nature or influence):

malign

WordNet sense 11 (having or exerting a malignant influence):

malefic, malevolent

WordNet sense 12 (harmful or evil in intent or effect):

maleficent, maleficent