Demonic

a.

1.

Of or pertaining to a demon or to demons; demoniac.

Adj.

1.

demonic - 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" Synonyms: fiendish, satanic, unholy, hellish, infernal, diabolic, diabolical

diabolic, diabolical, evil, fiendish, hellish, infernal, satanic, unholy, wicked