* Polyglot: This is the most common and widely understood term. It refers to someone who speaks multiple languages.
* Hexaglot: This term specifically refers to someone who speaks six languages.
* Multilingual: This term simply means someone who speaks multiple languages, without specifying the number.
* Fluent in six languages: This is a straightforward and descriptive way to describe the person.
Ultimately, the best term to use depends on the context and your desired level of specificity.