Where does “undergon” come from?

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

Ancestry of “undergon”, step by step

StepLanguageWordMeaning
1Old Englishundergānto undergo, undermine, ruin
2Old Englishunder-between, among; beneath; subordinate to
3Proto-Germanicunderamong, between; under, beneath; under
4Proto-Indo-Europeanh₁entérbetween
5Proto-Indo-Europeanh₁enin; in, inside

Words derived from “undergon”

Every word from Proto-Indo-European h₁en →Every word from Proto-Indo-European h₁entér →Every word from Proto-Germanic under →