Where does “underleyen” come from?

underleyen (Middle English) comes from Old English underleċġan, from Old English under-, from Proto-Germanic under, from Proto-Indo-European h₁entér, from Proto-Indo-European h₁en — in; in, inside.

Ancestry of “underleyen”, step by step

StepLanguageWordMeaning
1Old Englishunderleċġanto underlay, prop, support
2Old Englishunder-between, among; beneath; subordinate to
3Proto-Germanicunderamong, between; under, beneath; under
4Proto-Indo-Europeanh₁entérbetween
5Proto-Indo-Europeanh₁enin; in, inside
Every word from Proto-Indo-European h₁enEvery word from Proto-Indo-European h₁entérEvery word from Proto-Germanic under