Multilingual means able to speak, read, or write in multiple languages. A multilingual person might speak English at home, Spanish with grandparents, and French at school. Someone who speaks three languages is trilingual, four is quadrilingual, but multilingual covers anyone who uses more than one language.

Being multilingual opens doors to different cultures, ideas, and people. A multilingual doctor can help patients who speak different languages. A multilingual engineer can work with teams across continents. During World War II, some code talkers used languages like Navajo to send secret messages the enemy couldn't understand.

The word also describes things that use multiple languages: a multilingual dictionary translates between several languages, and a multilingual website displays content in different languages depending on who's reading it.

Learning to be multilingual takes effort and practice, but millions of people around the world grow up speaking two, three, or even more languages naturally. In countries like Switzerland, India, or Singapore, being multilingual is completely normal. Your brain can get better at solving problems and thinking flexibly when you learn multiple languages, which is one reason those grammar exercises and vocabulary drills matter.