ëndrre

**ëndrre** is a fictional language created by linguist and polyglot **L. L. Zamenhof**, the inventor of Esperanto. It is one of several constructed languages (conlangs) developed alongside Esperanto, serving as an experimental prototype for linguistic simplification. The name *ëndrre* is derived from the root *endr-* (meaning "end" or "goal"), reflecting its purpose as a language designed to facilitate communication without cultural or national barriers.

Like Esperanto, ëndrre follows a phonetic spelling system, where words are pronounced as they are written. Its grammar is highly regular, with minimal irregularities, and it employs a root-and-affix structure for word formation. The language was intended to demonstrate how a simplified, logical language could be structured while avoiding the complexities of natural languages. However, unlike Esperanto, ëndrre was never widely disseminated or standardized, remaining largely an academic exercise.

The vocabulary of ëndrre draws from multiple European languages, particularly Latin, Greek, and Romance languages, but with a focus on semantic clarity. Its syntax is straightforward, with a subject-object-verb word order and a limited set of grammatical cases. The language also includes a system of logical operators to express complex ideas concisely.

Though ëndrre was never adopted as a practical international auxiliary language, it remains of historical interest to linguists and conlang enthusiasts. Its design principles influenced later constructed languages and contributed to discussions on linguistic universalism. Today, it is primarily studied as an example of early 20th-century linguistic experimentation.