devilish Meaning, Definition & Usage

  1. adjective satellite showing the cunning or ingenuity or wickedness typical of a devil
    mephistophelean; diabolical; diabolic; mephistophelian.
    • devilish schemes
    • the cold calculation and diabolic art of some statesmen
    • the diabolical expression on his face
    • a mephistophelian glint in his eye
  2. adjective satellite playful in an appealingly bold way
    roguish; rascally.
    • a roguish grin
  3. adverb in a playfully devilish manner
    devilishly.
    • the socialists are further handicapped if they believe that capitalists are not only wicked but also devilishly clever

WordNet

Dev"il*ish adjective
Definitions
  1. Resembling, characteristic of, or pertaining to, the devil; diabolical; wicked in the extreme. "Devilish wickedness." Sir P. Sidney.
    This wisdom descendeth not from above, but is earthly, sensual, devilish. James iii. 15.
  2. Extreme; excessive. Colloq. Dryden. Syn. -- Diabolical; infernal; hellish; satanic; wicked; malicious; detestable; destructive. -- Dev"il*ish*ly, adv. -- Dev"il*ish*ness, n.

Webster 1913