Thonthal is a North-Central Continent language, first spoken in the end of the first revolution by peoples that have formed the Duls Settlements. It is thought to have evolved from several languages of the Western Dantrian Civilization. It was the official state language of Darda and Xornerian.

Due to thonthal being the language of Leykarya, it spread to several other countries, as Leykarya established international ties, but only as a foreign language.

For a number of historical and linquistic reasons, thonthal's evolution has been very slow. Over the course of more than 3000 years it hardly changed and its most ancient forms are still readable by modern speakers. Various forms of thonthal did evolve much faster in isolation from Leykarya, like some thonthal versions in Loodori and the neighboring area of Rowlow.