Where does “let” come from?

let (Middle Dutch) comes from Old Dutch lid, from Old English hlið, from Proto-Germanic hlidą, from Proto-Indo-European ḱlitós, from Proto-Indo-European ḱley-, from Proto-Indo-European ḱel- — to cover; to incline.

Ancestry of “let”, step by step

StepLanguageWordMeaning
1Old Dutchlid—
2Old EnglishhliðAlternative spelling of hliþ
3Proto-Germanichlidąlid, cover
4Proto-Indo-Europeanḱlitóscovered, sheltered; leaning, sloped, inclined
5Proto-Indo-Europeanḱley-to shelter, cover; to lean, slope, incline
6Proto-Indo-Europeanḱel-to cover; to incline
Every word from Proto-Indo-European ḱel- →Every word from Proto-Indo-European ḱley- →Every word from Proto-Indo-European ḱlitós →