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A diachronic conlang is a conlang (usually a fictional language) which is derived from another language (natlang or conlang) by simulating sound changes and other kinds of language change.
Sometimes the diachronic conlang is part of a conlang family.
The diachronic method has been pioneered by J. R. R. Tolkien in the early 20th century in his Quendian language family, and is now considered the best way of coming up with a naturalistic artlang.
Special kinds of diachronic conlangs
A notable subcategory of diachronic conlangs is bogolangs.
Diachronic conlangs on Frathwiki
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