unholy

adj

1.
not hallowed or consecrated
unhallowed
Antonym:
holy
Derived from:
unholiness
2.
extremely evil or cruel; expressive of cruelty or befitting hell
demonic diabolic diabolical fiendish hellish infernal satanic
Derived from:
unholiness
3.
having committed unrighteous acts
sinful wicked
Derived from:
unholiness