Definition & Meaning of "shyster"in English

What is the origin of the term "shyster" and how is it used?

"Shyster" is a slang term used to describe a lawyer or professional regarded as unscrupulous, dishonest, or unethical. It appeared in American English in the mid-19th century, likely from German Scheißer ("defecator" or "scoundrel"), evolving into a metaphor for someone who exploits others through deceit, trickery, or legal loopholes. The term is derogatory, often used in informal, journalistic, or social contexts to criticize unethical behavior in law or business. It is strongly negative and carries a clear moral judgment.