Resembling a devil.
Characterized by or indicating future misfortune; ominous:
Extremely wicked or cruel.
Morally base or evil; wicked; depraved; sinful
Of, characteristic of, or like Satan; devilish; infernal; diabolic
Subtly sly and tempting.
Mean-spirited or deliberately hurtful; malicious:
Morally bad or wrong; acting or done with evil intent; depraved
Extremely evil or cruel.
showing the cunning or ingenuity or wickedness typical of a devil
extremely evil or cruel; expressive of cruelty or befitting hell
Alternative capitalization of Mephistophelean
Find another word for diabolical. In this page you can discover 26 synonyms, antonyms, idiomatic expressions, and related words for diabolical, like: devilish, evil, fiendish, heinous, demoniac, unholy, vile, devious, murderous, hideous and cunning.