Synonyms of diabolic

1 Syllable
vile, cruel
2 Syllables
impious, theurgic, monstrous, tranced, vicious, hellborn, ogreish, wicked, shocking, hellish, runic, witching, nasty, fiendish
3 Syllables
wizardly, villainous, magical, damnable, infernal, theurgical, demoniac, demonic, unpleasant, atrocious, devilish, satanic, nefarious, sorcerous, witchlike
4 Syllables
demonical, ensorcelled, unhallowed, talismanic, serpentine, demoniacal, satanical, necromantic, thaumaturgic
5 Syllables
spiritualistic, telekinetic, mephistophelian, thaumaturgical
7 Syllables
parapsychological