The phrase "double-dealing hustler" refers to a person who engages in deceitful or fraudulent behavior for personal gain. It is a negative term that is often used to describe shady characters or individuals who exploit others for their own benefit. Synonyms for the term "double-dealing hustler" may include con artist, swindler, fraudster, scammer, charlatan, and trickster. These words all describe individuals who use cunning and deception in order to get ahead. While these types of people are often portrayed negatively in popular culture, it is important to recognize that not everyone who engages in hustling behavior is necessarily a bad person.