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

sneaky \sneak"y\, n.
   like a sneak; sneaking.
   1913 webster

[2] : WordNet (r) 2.0

sneaky
     adj 1: marked by deception; "achieved success in business only by
            underhand methods" syn: underhand, underhanded
     2: marked by quiet and caution and secrecy; taking pains to
        avoid being observed; "a furtive manner"; "a lurking
        prowler"; "a sneak attack"; "stealthy footsteps"; "a
        surreptitious glance at his watch"; "someone skulking in
        the shadows" syn: furtive, lurking, skulking, sneaka,
         stealthy, surreptitious
see also:
underhand underhanded furtive lurking skulking sneaka 
stealthy surreptitious 

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

92 moby thesaurus words for "sneaky":
   machiavellian, machiavellic, acute, arch, artful, astute,
   back-door, backstairs, cagey, calculating, canny, chiseling,
   clandestine, clever, collusive, covert, covinous, cowering, crafty,
   cringing, cunning, cute, deceitful, deep, deep-laid, designing,
   devious, diplomatic, dishonest, disingenuous, duplicitous, false,
   falsehearted, feline, finagling, foxy, fraudulent, furtive,
   guileful, hidlings, hole-and-corner, hugger-mugger, indirect,
   ingenious, insidious, inventive, knowing, pawky, politic, privy,
   quailing, quiet, ready, resourceful, scheming, serpentine, sharp,
   shifty, shrewd, skulking, slick, slinking, slinky, slippery, sly,
   smooth, snaky, sneaking, sophistical, stealthy, strategic, subtile,
   subtle, supple, surreptitious, tactical, treacherous, trickish,
   tricksy, tricky, two-faced, under-the-counter, under-the-table,
   undercover, underground, underhand, underhanded, unobtrusive,
   unscrupulous, vulpine, wary, wily

Sneaky >> S Words
Sneaky, definition of term: Sneaky
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