Slang a person, esp. a lawyer, who uses unethical or tricky methods; pettifogger
Origin of shysterearlier shuyster, probably altered (? after barrister) ; from German scheisser, defecator
An unethical, unscrupulous practitioner, especially of law.
Origin of shysterProbably alteration of German Scheisser, son of a bitch, bastard, from scheissen, to defecate, from Middle High German schīzen, from Old High German skīzzan; see skei- in Indo-European roots.
The origin is mostly likely from German ScheiÃŸer (“incompetent worthless person"), from scheiÃŸen (“to defecate"), probably influenced by -ster