hear it again

1 : of, expressed in, or using two languages
2 : able to use two languages especially with fluency

Example sentence:
Aunt Beatriz and Uncle Carlos spoke both English and Spanish when their children were growing up and now our cousins are bilingual.

Etymology:
The Latin root "lingua" means "tongue," and when combined with "bi-" it forms the Latin "bilinguis." In the early 1800s English speakers borrowed "bilinguis" as "bilingual" and used it to describe someone able to speak two languages or something expressed in two languages. Other words in the "lingua" family include "language," "lingo," referring to strange or hard to understand language, and "linguist," which is someone skilled in languages or a person who specializes in linguistics, the study of human speech.