Drug trafficking is an illegal practice that involves the transportation, distribution, and sale of controlled substances. The term drug trafficker is commonly used to describe a person involved in this illegal profession. However, it's important to note that drug trafficker is just one of the many words used to describe someone involved in drug trafficking. Other synonyms for drug trafficker include drug kingpin, drug dealer, drug smuggler, drug runner, and drug courier. These terms are often used interchangeably and refer to people involved in the illicit drug trade, regardless of their specific role or level of involvement.