Where does “أنا” come from?

أنا (Chadian Arabic) comes from Arabic أَنَا, from Proto-Semitic ʔanāku, from Proto-Afro-Asiatic ˀanāku.

Ancestry of “أنا”, step by step

StepLanguageWordMeaning
1ArabicأَنَاI
2Proto-SemiticʔanākuI
3Proto-Afro-Asiaticˀanāku—
Every word from Proto-Afro-Asiatic ˀanāku →Every word from Proto-Semitic ʔanāku →Every word from Arabic أَنَا →