(adj) extremely evil or cruel; expressive of cruelty or befitting hell, Syn. unholy, satanic, infernal, hellish, diabolic, diabolical, fiendish, Example: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
The Collaborative International Dictionary of English (GCIDE) v.0.53 Collaborative International Dictionary (GCIDE)
{ } a. [ Cf. F. satanique, Gr. &unr_;. ] Of or pertaining to Satan; having the qualities of Satan; resembling Satan; extremely malicious or wicked; devilish; infernal. “Satanic strength.” “Satanic host.” Milton. [ 1913 Webster ]
Detest the slander which, with a Satanic smile, exults over the character it has ruined. Dr. T. Dwight. [ 1913 Webster ]
-- Sa*tan"ic*al*ly, adv. -- Sa*tan"ic*al*ness, n. [ 1913 Webster ]