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"
of questionable honesty or legality
"He established a dummy company through which he laundered vast sums of cash from shady middlemen and arms dealers"
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"
Abounding in shades.
"The ancient forest was so shady that we barely saw a patch of sunlight on the mossy ground."
A surname.
"My neighbor, Mr. Shady, waved at me as I walked past his house yesterday."