A language isolate is a natural language that has no known relatives or connections to other languages. This means it does not belong to any language family, making it unique in its structure and vocabulary. An example of a language isolate is Basque, spoken in parts of Spain and France. Language isolates can provide valuable insights into human language development and evolution. They often retain ancient features that may have been lost in related languages. Studying these languages helps linguists understand the diversity and complexity of human communication.