Adjective
1. of businesses and businessmen;
"a fly-by-night operation"2. of questionable taste or morality;
"a louche nightclub""a louche painting"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"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"