1) Bilingual 2) Like many at the UN 3) Polyglot 4) Trilingual 1) Bilingual 2) Polyglot 3) Trilingual 
An application that can simultaneously display and manipulate text in multiple languages. For example, a word processor that allows Japanese and English in the same document is multilingual.
[adj] - using or knowing more than one language
multilingual, multilingualism, multilingually 1. Able to speak more than two languages fluently. 2. Written in, expressed in, or using more than two languages.
adjective using or knowing more than one language; `a multilingual translator`; `a multilingual nation`
using or able to speak several or many languages with some facility. · spoken or written in several or many languages: a multilingual broadcast. · dealing with or involving several or many languages: a multilingual dictionary of business terms.