Klingon speaker, say

The crossword question is asking for a term that describes a person who is a fan of the science fiction series Star Trek and is also capable of speaking the Klingon language, which is a fictional language created for the series. The answer to this question is “Trekker” or “Trekkie“. Both terms are used interchangeably to describe fans of the Star Trek franchise. “Trekkie” is the more common term and is often associated with fans who are more casual and enthusiastic about the series, while “Trekker” is a term that was coined in the 1970s to describe fans who take the series more seriously and explore the concepts presented in the show more deeply. Either term is an excellent fit for someone who is a fan of Star Trek and can speak the Klingon language.