Not trustworthy; disreputable.
Abounding in shades.
Mean, cruel.
Overspread with shade; sheltered from the glare of light or sultry heat.
Causing shade.
Tricky; deceptive; false; spurious; contemptible.
Disparaging or derisive in an insinuative way.
An underhanded, tricky person given to sharp practice; a sharper; a cheat.
Counterfeit money.