[1] : The Collaborative International Dictionary of English v.0.48

knavish \knav"ish\, a.
   1. like or characteristic of a knave3; given to knavery;
      trickish; fraudulent; dishonest; villainous; as, a knavish
      fellow, or a knavish trick. "knavish politicians."
      --macaulay.
      1913 webster

   2. mischievous; roguish; waggish; rascally.
      1913 webster

            cupid is knavish lad,
            thus to make poor females mad.        --shak.
      1913 webster

[2] : WordNet (r) 2.0

knavish
     adj : marked by skill in deception; "cunning men often pass for
           wise"; "deep political machinations"; "a foxy scheme";
           "a slick evasive answer"; "sly as a fox"; "tricky dik";
           "a wily old attorney" syn: crafty, cunning, dodgy,
            foxy, guileful, slick, sly, tricksy, tricky,
            wily
see also:
crafty cunning dodgy foxy guileful slick 
sly tricksy tricky wily 

[3] : Moby Thesaurus II by Grady Ward, 1.0

74 moby thesaurus words for "knavish":
   abominable, arch, arrant, atrocious, bad, base, black,
   blackguardly, blamable, blameworthy, criminal, damnable, dark,
   deceitful, degraded, devilish, disgraceful, elfish, elvish, evil,
   execrable, flagitious, flagrant, foolish, foul, full of mischief,
   heinous, high-spirited, impish, improper, infamous, iniquitous,
   low, lying, mendacious, mischief-loving, mischievous, monstrous,
   naughty, nefarious, notorious, peccant, playful, prankish,
   pranksome, pranky, puckish, rank, rascally, recreant,
   reprehensible, reprobate, roguish, scampish, scandalous,
   scapegrace, scoundrelly, shameful, shifty, sinful, sportive,
   trickish, tricksy, unforgivable, unpardonable, unspeakable,
   untruthful, unworthy, vicious, vile, villainous, waggish, wicked,
   wrong

Knavish >> K Words
Knavish, definition of term: Knavish
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