Where does “لنا” come from?

لنا (Arabic) comes from Arabic ل, from Proto-Semitic *lV- — for, to.

Ancestry of “لنا”, step by step

لنا traces back through two separate lines of ancestry.

via Arabic ل

StepLanguageWordMeaning
1Arabicلto, for, belonging to; لَـ •; Used to express...
2Proto-Semitic*lV-for, to

via Arabic نا

StepLanguageWordMeaning
1Arabicناus, our
Every word from Proto-Semitic *lV-