* Bilingual: This is the most common term, meaning someone who can speak two languages fluently.
* Multilingual: This term is used for someone who can speak more than two languages fluently.
* Polyglot: This term is used for someone who can speak many languages fluently. It's a more formal and sometimes even impressive-sounding word than "multilingual."
You could also use more specific terms like:
* Bicultural: This term is used for someone who is familiar with and comfortable in two different cultures.
* Trilingual: This term is used for someone who can speak three languages fluently.
The best word to use depends on the specific situation and the level of fluency of the person you're talking about.