Search Result for "diabolical": 
Wordnet 3.0

ADJECTIVE (2)

1. showing the cunning or ingenuity or wickedness typical of a devil;
- Example: "devilish schemes"
- Example: "the cold calculation and diabolic art of some statesmen"
- Example: "the diabolical expression on his face"
- Example: "a mephistophelian glint in his eye"
[syn: devilish, diabolic, diabolical, mephistophelian, mephistophelean]

2. extremely evil or cruel; expressive of cruelty or befitting hell;
- Example: "something demonic in him--something that could be cruel"
- Example: "fires lit up a diabolic scene"
- Example: "diabolical sorcerers under the influence of devils"
- Example: "a fiendish despot"
- Example: "hellish torture"
- Example: "infernal instruments of war"
- Example: "satanic cruelty"
- Example: "unholy grimaces"
[syn: demonic, diabolic, diabolical, fiendish, hellish, infernal, satanic, unholy]


The Collaborative International Dictionary of English v.0.48:

Diabolic \Di`a*bol"ic\, Diabolical \Di`a*bol"ic*al\, a. [L. diabolicus, Gr. ? devilish, slanderous: cf. F. diabolique. See Devil.] 1. Pertaining to the devil; resembling, or appropriate, or appropriate to, the devil; befitting hell or satan; devilish; infernal; impious; as, a diabolic or diabolical temper or act; the diabolical expression on his face; fires lit up a diabolic scene. "Diabolic power." --Milton. "The diabolical institution." --Motley. Syn: devilish, mephistophelian, mephistophelean. [1913 Webster] 2. showing a wicked cunning or ingenuity; as, the cold calculation and diabolic art of some statesmen. Syn: devilish, mephistophelian, mephistophelean. [WordNet 1.5] 3. extremely evil or cruel; atrocious; outrageously wicked; as, diabolical sorcerers under the influence of devils; diabolical torturers taking pleasure in their craft. Syn: demonic, fiendish, hellish, infernal, nefarious, satanic. [1913 Webster + WordNet 1.5] -- Di`a*bol"ic*al*ly, adv. -- Di`a*bol"ic*al*ness, n.
WordNet (r) 3.0 (2006):

diabolical adj 1: showing the cunning or ingenuity or wickedness typical of a devil; "devilish schemes"; "the cold calculation and diabolic art of some statesmen"; "the diabolical expression on his face"; "a mephistophelian glint in his eye" [syn: devilish, diabolic, diabolical, mephistophelian, mephistophelean] 2: 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" [syn: demonic, diabolic, diabolical, fiendish, hellish, infernal, satanic, unholy]
Moby Thesaurus II by Grady Ward, 1.0:

61 Moby Thesaurus words for "diabolical": Draconian, Mephistophelian, Tartarean, animal, anthropophagous, atrocious, barbaric, barbarous, beastly, bestial, bloodthirsty, bloody, bloody-minded, brutal, brutalized, brute, brutish, cannibalistic, cruel, cruel-hearted, cursed, damnable, demoniac, demoniacal, demonic, demonish, demonlike, devil-like, devilish, diabolic, execrable, fell, feral, ferocious, fiendish, fiendlike, fierce, ghoulish, hellborn, hellish, infernal, inhuman, inhumane, murderous, ogreish, ruthless, sadistic, sanguinary, sanguineous, satanic, savage, sharkish, slavering, subhuman, truculent, unchristian, uncivilized, ungodly, unhuman, vicious, wolfish