Blackbirder is a term that refers to someone who engages in the illegal practice of human trafficking, particularly in the 19th and early 20th centuries. Some synonyms for the word blackbirder include slaver, slave trader, human trafficker, and kidnapper. Other related words include smuggler, pirate, poacher, and profiteer. These terms all imply the illegality and exploitation of human beings for personal gain or profit. While blackbirding may no longer be a common practice, these words are important to remember as reminders of the darker aspects of human history and the ongoing fight against human trafficking and exploitation.