Lithuanian language

Lithuanian is an East Baltic language within the Indo-European language family.

It serves as the official language of Lithuania and is also an official language of the European Union. Today, approximately 2.8 million people speak Lithuanian as their native tongue. An additional 1.5 million speakers live outside of Lithuania. In Lithuania itself, about 500,000 residents use it as a second language daily. The language is written using the Latin script.

While it is closely related to Latvian, the two languages are not mutually intelligible, meaning speakers cannot easily understand one another.

Linguists often describe Lithuanian as a highly conservative language. This term means it has retained many ancient features from Proto-Indo-European. These are original linguistic traits that most other descendant languages have lost over time. Because of this, Lithuanian shares archaic grammar and phonology with ancient languages like Sanskrit and Ancient Greek.

This makes the language a vital tool for researchers. They use it to reconstruct the sounds and structures of the lost Proto-Indo-European language. Even though the earliest Lithuanian texts date only to the 16th century, its living structure acts as a bridge to the deep past.

The history of Baltic languages begins with a large area east of the Baltic Sea.

Glottochronological research suggests that Eastern and Western Baltic languages split between 600 BC and 400 BC. Lithuanian emerged from the Eastern Baltic subgroup. Around 500 AD, the northern Eastern Baltic languages were influenced by Finnic languages. This caused them to develop differently from the Southern Baltic groups. The Southern groups, which include the ancestors of Lithuanian speakers, were less influenced by this process. Consequently, they retained many older linguistic features.

As time passed, Lithuanian and Latvian began to differentiate after approximately 800 AD. For a long period, they may have been considered dialects of a single language. Transitional dialects likely existed until the 14th or 15th century, and perhaps as late as the 17th century. In the western Daugava basin, the German Livonian Brothers of the Sword influenced the region. This led to Germanisation in what was then called Terra Mariana.

This historical movement helped shape the independent development of the Latvian language.

The written history of Lithuanian is tied to the arrival of Christianity. The first recorded Lithuanian word, "Ba," appears in a 1207 chronicle. While no writings from before the 15th century have survived, Lithuanian was recognized as a language at the Council of Constance between 1414 and 1418.

The first Lithuanian book, the Catechism by Martynas Mažvydas, was printed in 1547. Earlier, between 1503 and 1525, translations of religious texts like the Lord's Prayer were written in the Southern Aukštaitian dialect. These early documents helped establish a written tradition for the language.

During the period of the Grand Duchy of Lithuania, the language held significant status. It was the spoken language of several ruling dynasties, including the Gediminids, Kęstutaičiai, and Jagiellonian dynasties.

Grand Duke Alexander Jagiellon even ordered that priests in 28 specific churches must know Lithuanian. Even as Polish and Ruthenian became common for official business, Lithuanian remained vital at royal courts. For example, the young Casimir IV Jagiellon was taught Lithuanian customs by court officials. This shows that the language remained a core part of the ruling culture.

Lithuanian also shares a complex relationship with Slavic languages. The two groups both branched off from a common Proto-Balto-Slavic stage. This connection is visible in shared vocabulary and grammar. For instance, the Lithuanian word for "wolf" is very similar to the Polish word.

Scholars have also used Lithuanian place names to map the historical eastern boundaries of the language. These boundaries often aligned with the spread of Catholic and Orthodox faiths. By studying these connections, linguists gain a deeper understanding of how European cultures and languages have interacted for centuries.