Where does “лѣть” come from?

лѣть (Old Church Slavonic) comes from Proto-Slavic *lětь — it is allowed.

лѣть (Old Church Slavonic): permissible, allowed; Together with ~ естъ

Definitions

  1. permissible, allowed; Together with ~ естъ

Ancestry of “лѣть”, step by step

StepLanguageWordMeaning
1Proto-Slavic*lětьit is allowed
Every word from Proto-Slavic *lětь
лѣть — Etymology, Origin & Word History | Etymology Explorer