Lingvo Kosmopolita is a relatively uncommon phrase that refers to a language that is widely spoken across the world. It can also be used to describe someone who is open-minded and accepting of different cultures. Some synonyms for Lingvo Kosmopolita include global language, international tongue, universal language, and world speech. These terms all describe a language that is used by a significant portion of the world's population and is understood by people from different countries and backgrounds. Additionally, words like cosmopolitan, worldly, and multicultural are synonyms for the broader meaning of Lingvo Kosmopolita, describing people who are open to new experiences and ideas, and who embrace diversity and cultural exchange.