shady

(of businesses and businessmen) unscrupulous; "a shady operation"

of questionable taste or morality; "a louche nightclub"; "a louche painting"

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"

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"