devilish

devilish
    adv 1: in a playfully devilish manner; "the socialists are
           further handicapped if they believe that capitalists are
           not only wicked but also devilishly clever" [syn:
           {devilishly}, {devilish}]
    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: playful in an appealingly bold way; "a roguish grin" [syn:
       {devilish}, {rascally}, {roguish}]
    

Devilish \Dev"il*ish\, a.
   1. Resembling, characteristic of, or pertaining to, the
      devil; diabolical; wicked in the extreme. "Devilish
      wickedness." --Sir P. Sidney.
      [1913 Webster]

            This wisdom descendeth not from above, but is
            earthly, sensual, devilish.           --James iii.
                                                  15.
      [1913 Webster]

   2. Extreme; excessive. [Colloq.] --Dryden.

   Syn: Diabolical; infernal; hellish; satanic; wicked;
        malicious; detestable; destructive. -- {Dev"il*ish*ly},
        adv. -- {Dev"il*ish*ness}, n.
        [1913 Webster]
    

114 Moby Thesaurus words for "devilish":
      Acherontic, Draconian, Lethean, Mephistophelian, Plutonian,
      Plutonic, Stygian, Tartarean, accursed, animal, anthropophagous,
      arch, atrocious, bad, barbaric, barbarous, beastly, bestial,
      bloodthirsty, bloody, bloody-minded, brutal, brutalized, brute,
      brutish, cannibalistic, chthonian, chthonic, crazy, cruel,
      cruel-hearted, cursed, damnable, demoniac, demoniacal, demonic,
      demonish, demonlike, devil-like, diabolic, diabolical, elfish,
      elvish, evil, execrable, fell, feral, ferocious, fiendish,
      fiendlike, fierce, flagitious, foolish, full of mischief, ghoulish,
      heinous, hellborn, hellish, high-spirited, impish, infernal,
      inhuman, inhumane, iniquitous, knavish, madcap, maleficent,
      malevolent, malign, malignant, mischief-loving, mischievous,
      murderous, naughty, nefarious, ogreish, pandemoniac, pandemonic,
      playful, prankish, pranksome, pranky, puckish, purgatorial,
      roguish, ruthless, sadistic, sanguinary, sanguineous, satanic,
      savage, scampish, scapegrace, serpentine, sharkish, sinful,
      sinister, slavering, sportive, subhuman, sulfurous, trickish,
      tricksy, truculent, unchristian, uncivilized, ungodly, unhallowed,
      unhuman, vicious, villainous, waggish, wicked, wolfish