shady

adjective

1. 1

   filled with shade

   the shady side of the street

   the surface of the pond is dark and shadowed

2. 2

   not as expected

   there was something fishy about the accident

   up to some funny business

3. 3

   of questionable taste or morality

   a louche nightclub

   a louche painting

4. 4

   (of businesses and businessmen) unscrupulous

   a shady operation