from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Showing wickedness typical of a devil.
  • adj. Extremely evil or cruel.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Pertaining to the devil; resembling, or appropriate, or appropriate to, the devil; befitting hell or satan; devilish; infernal; impious.
  • adj. showing a wicked cunning or ingenuity.
  • adj. extremely evil or cruel; atrocious; outrageously wicked.

from The Century Dictionary and Cyclopedia

  • Pertaining to the devil; partaking of the qualities of the devil; devilish; hence, infernal; Impious; atrocious; outrageously wicked: as, a diabolic plot; a diabolical temper.
  • Synonyms See list under devilish.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. showing the cunning or ingenuity or wickedness typical of a devil
  • adj. extremely evil or cruel; expressive of cruelty or befitting hell


from Wiktionary, Creative Commons Attribution/Share-Alike License

First attested between 1350 and 1400 from Middle English diabolik, from Middle French diabolique, from Late Latin diabolicus, from Ancient Greek διαβολικός (diabolikos, "devilish"), from διάβολος (diabolos, "devil").



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