trilingual

Using or able to use three languages, especially with equal or nearly equal fluency.

Of, relating to, or expressed in three languages.

A person who is able to use three languages, especially with equal fluency.

Consisting of or expressed in three languages.

Containing, or consisting of, three languages; expressed in three languages.

Able to read or speak three languages.

Expressed or written in three languages.

A trilingual person.

using or knowing three languages