The Fremen's Chakobsa language in Dune: Part Two borrowed from real-world languages, complicating its recreation for the movies. Linguistic experts developed a system to flesh out Chakobsa, building off what Frank Herbert originally featured in the books. Herbert's "haphazard" approach to languages may have contributed to author J. R. R. Tolkien's criticism of the novel.

The linguists responsible for crafting Dune: Part Two’s Fremen language have explained the difficulties they faced in bringing it to life. Based on the classic 1965 sci-fi novel by Frank Herbert, Dune: Part Two features a much more in-depth exploration of the native people of Arrakis, among whom Timothée Chalamet’s Paul Atreides and Rebecca Ferguson’s Lady Jessica seek refuge following the events of Dune: Part One. Given the second movie’s greater focus on Fremen culture, many scenes feature dialogue spoken in the invented language known as Chakobsa.

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