Definition of Shady

Adjective: shady (shadier,shadiest) shey-dee

(of businesses and businessmen) unscrupulous
"a shady operation";
- fly-by-night
Of questionable taste or morality
"a shady nightclub";
- louche
Not as expected
"a shady deal";
- fishy, funny, suspect, suspicious
Filled with shade
"the shady side of the street";
- shadowed, shadowy, umbrageous