He even had the courage to make up his own works if the need arose, and with the skill of an accomplihsed wordsmith he hammered out some rather extraordinary examples. Many of his words are rooted in Arabic and he Hebrew, and in numerous cases he combined syllables from two languages, two cultures, or even two religions. He referred to Zensunni and Zensufi literature, for instance, whereby Zen is joined alternately with the Islamic denominations Sunni and Sufi, Sometimes he programmed his computer to make random word and name combination from selected alphabets. On other occasions he found names in telephone books: Harkonnen, for example.
The words and names in Dune are eclectic. Alia was one of the Muslim saints, tracing her descent directly from Muhammed. Atreides is based upon Howe Atreus, from Greek history. The word "sihaya" is Navajo; "seitch" is Chakobsa, a language found in the Caucasus; "jihad" is Islamic for holy war, and this word has the same meaning in Arabic as it does to the people of Dune. The Padishah Emperor ruling the universe of Dune is from Persian, East Indian and Turkish traditions. Jamis is an old English name that my father found when researching very old genealogical records.
Some interesting stuff there.