Taymanitic was the language and script of the oasis of Taymāʾ in northwestern Arabia, dated to the second half of the 6th century BC.
[1] Taymanitic does not participate in the key innovations of Proto-Arabic, precluding it from being considered a member of the Arabic language family.
It shares one key isogloss with Northwest Semitic: the change w > y in word-initial position.
Examples include yrḫ for *warḫum 'moon, month' and ydʿ for wadaʿa 'to know'.
[2] It is clear that Taymanitic script expressed a distinct linguistic variety that is not Arabic and not closely related to Hismaic or Safaitic, while it can tentatively be suggested that it was more closely related to Northwest Semitic.