Rogue trader is commonly used to describe a person who engages in risky and unethical financial practices resulting in significant losses for their employer or clients. However, there are several other terms that could be used to describe such an individual. Some synonyms include a scam artist, fraudster, embezzler, swindler, exploiter, hustler, or a con artist. These terms are often used interchangeably, but there may be subtle differences depending on the context. Regardless of the specific term used, it is important to recognize and avoid individuals who engage in such financial malpractices to protect oneself and the broader financial system.