extremely evil or cruel; expressive of cruelty or befitting hell
"something demonic in him--something that could be cruel"
"fires lit up a diabolic scene"
"diabolical sorcerers under the influence of devils"
"a fiendish despot"
"hellish torture"
"infernal instruments of war"
"satanic cruelty"
"unholy grimaces"
Alternative form of Satanic (of, pertaining to or resembling Satan).
"The movie's plot was so full of dark rituals and evil pacts that neighbors whispered it had a satanic agenda."
Of, pertaining to or resembling Satan (the Devil).