The phrase "shady businessman" refers to a person involved in business or trade who is often involved in suspicious or dishonest activities. Full definition
It's a moral conflict expertly conveyed by Ejiofor, who, whether delivering stern lessons to his police officer student and friend Joe (Max Martini) or dealing with a host of shady businessmen (including Mamet regulars Rickey Jay and Joe Mantegna), smartly expresses his character's staunch conviction with hints of sorrow born from the recognition that devotion to his «code of the warrior» and its rituals inevitably means pain for himself and those he cares about. (slantmagazine.com)
His downfall may come via shady businessmen and slush nonprofits. (nypost.com)
After getting assaulted by cleavage, the two land on an even bigger case, involving shady businessman Antonio Pope (Benjamin Bratt). (washingtonpost.com)