guilefully

from The Collaborative International Dictionary of English v.0.48

Guileful \Guile"ful\, a.
   Full of guile; characterized by cunning, deceit, or
   treachery; guilty. -- {Guile"ful*ly}, adv. --
   {Guile"ful*ness}, n.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

27 Moby Thesaurus words for "guilefully":
      artfully, astutely, cagily, cannily, cleverly, cunningly,
      deceitfully, foxily, fraudulently, furtively, indirectly,
      insidiously, knowingly, on the sly, shiftily, shrewdly, slick,
      slyly, smoothly, subtilely, subtlely, surreptitiously,
      treacherously, trickily, underhandedly, warily, wilily

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