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

shady \shad"y\, a. compar. shadier; superl. shadiest.
   1. abounding in shade or shades; overspread with shade;
      causing shade.
      1913 webster

            the shady trees cover him with their shadow. --job.
                                                  xl. 22.
      1913 webster

            and amaryllis fills the shady groves. --dryden.
      1913 webster

   2. sheltered from the glare of light or sultry heat.
      1913 webster

            cast it also that you may have rooms shady for
            summer and warm for winter.           --bacon.
      1913 webster

   3. of or pertaining to shade or darkness; hence, unfit to be
      seen or known; of questionable character; unsavory;
      equivocal; dubious, corrupt, or criminal; as, a shady
      character; -- of people or activities. colloq. "a shady
      business." --london sat. rev.

            shady characters, disreputable, criminal. --london
                                                  spectator.
      1913 webster

   on the shady side of, on the thither side of; as, on the
      shady side of fifty; that is, more than fifty. colloq.
      

   to keep shady, to stay in concealment; also, to be
      reticent. slang
      1913 webster
see also:
shadier shadiest on the shady side of to keep shady 

[2] : WordNet (r) 2.0

shady
     adj 1: of businesses and businessmen; "a fly-by-night operation"
            syn: fly-by-night
     2: of questionable taste or morality; "a louche nightclub"; "a
        louche painting" syn: louche
     3: not as expected; "there was something fishy about the
        accident"; "up to some funny business"; "some definitely
        queer goings-on"; "a shady deal"; "her motives were
        suspect"; "suspicious behavior" syn: fishy, funny, queer,
         suspect, suspicious
     4: filled with shade; "the shady side of the street"; "the
        surface of the pond is dark and shadowed"; "we sat on
        rocks in a shadowy cove"; "cool umbrageous woodlands"
        syn: shadowed, shadowy, umbrageous
     also: shadiest, shadier
see also:
fly-by-night louche fishy funny queer suspect 
suspicious shadowed shadowy umbrageous shadiest 
shadier 

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

93 moby thesaurus words for "shady":
   amoral, bent, blue, bosky, broad, clouded, conscienceless, corrupt,
   corrupted, criminal, crooked, curtained, dark, darkling,
   derogatory, devious, discreditable, disgraceful, dishonest,
   dishonorable, disreputable, doubtful, dubious, dusky, equivocal,
   evasive, felonious, fishy, fraudulent, ignoble, ignominious,
   ill-got, ill-gotten, immoral, indecisive, indefinite, indirect,
   indistinct, infamous, inglorious, insidious, not kosher, notorious,
   obumbrate, obumbrated, off-color, overshaded, overshadowed,
   penumbral, purple, questionable, racy, rotten, salty, screened,
   seamy, shabby, shaded, shadow, shadowy, shameful, shameless,
   sheltered, shifty, shoddy, sinister, slippery, sordid, spicy,
   suggestive, suspect, suspicious, tricky, umbral, uncertain,
   unconscienced, unconscientious, unconscionable, undecided,
   underhand, underhanded, unethical, unpraiseworthy, unprincipled,
   unreliable, unrespectable, unsavory, unscrupulous,
   unstraightforward, veiled, wicked, without remorse,
   without shame

[4] : U.S. Gazetteer (1990)

shady, ny
  zip codes: 12409

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