Synonyms of 'diabolic'

abominable, accursed, animal, appalling, atrocious, awful, bad, barbaric, barbarous, base, beastly, bestial, bloodthirsty, bloody, brutal, Brute, brutish, corrupt, cruel, cursed, damnable, demoniac, demoniacal, demonic, depraved, devilish, Draconian, dreadful, evil, execrable, fell, feral, ferocious, fiendish, fierce, flagitious, foul, heinous, hellish, hideous, horrible, horrid, ill, impious, infernal, inhuman, inhumane, iniquitous, maleficent, malevolent, malicious, malign, monstrous, murderous, odious, ruthless, sadistic, sanguinary, sanguineous, satanic, savage, serpentine, sinful, sinister, subhuman, Tartarean, terrible, truculent, unchristian, uncivilized, ungodly, unhallowed, vicious, vile, wicked, wolfish