Slovenian, a South Slavic language, has its roots in the early medieval period. It developed from the Proto-Slavic language spoken by the Slavic tribes who settled in the area of modern-day Slovenia during the 6th century. The first written records of the language appear in the 9th century, with the Freising Manuscripts (circa 973) being the oldest known documents containing Slovenian elements. During the Middle Ages, the language was largely oral, with Latin serving as the dominant written language for religious and administrative purposes. Despite this, Slovenian continued to evolve and differentiate itself from other Slavic languages.

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In the 16th century, the Protestant reformer Primož Trubar played a significant role in standardizing Slovenian, publishing the first books in the language, including a translation of the Bible. Over the centuries, Slovenian developed its distinct dialects, influenced by historical shifts such as the Austrian Empire's rule and later the formation of Yugoslavia. Despite various challenges, including suppression during certain periods of history, Slovenian maintained its status as a national language. It became one of the official languages of Yugoslavia and, following Slovenia's independence in 1991, was recognized as the official language of the newly formed Republic of Slovenia.