Khuzdul (khuzˈdul) is a fictional language created by J. R. R. Tolkien, one of the languages of Middle-earth, specifically the secret and private language of the Dwarves. Tolkien began developing Khuzdul before the publication in 1936 of The Hobbit, with some names appearing in the early versions of The Silmarillion. Tolkien based Khuzdul on Semitic languages, primarily Hebrew, featuring triconsonantal roots and similarities to Hebrew's phonology and morphology. Tolkien noted some similarities between Dwarves and Jews: both were "at once natives and aliens in their habitations, speaking the languages of the country, but with an accent due to their own private tongue...". Tolkien also commented of the Dwarves that "their words are Semitic obviously, constructed to be Semitic." Although a very limited vocabulary is known, Tolkien mentioned he had developed the language to a certain extent. A small amount of material on Khuzdul phonology and root modifications has survived which is yet to be published. In the fictional setting of Middle-earth, little is known of Khuzdul (once written Khuzdûl), the Dwarves kept it secret, except for place names and a few phrases such as their battle-cry and Balin's tomb inscription in Moria, which read respectively: The highest level of secrecy applied to Dwarves' "inner-names", their personal names, with the possible exception of the Petty-dwarves. The names of all Dwarves are "outer-names" either from another language (Dalish) or nicknames/titles, sometimes in Khuzdul: e.g. , . According to the Lhammas, Khuzdul is a language isolate, the sole member of the Aulëan language family, not related to the Oromëan languages spoken by Elves. Aulëan was named from the Dwarvish tradition that it had been devised by Aulë the Smith, the Vala who created the Dwarves. Later, Tolkien dropped the origins of Elvish being taught by Oromë, but kept the origins of Khuzdul the same. It is said in The Silmarillion that Aulë created the dwarves, and taught them "the language he had devised for them", making Khuzdul both in fiction and reality, a constructed language.