Where does “underkeep” come from?

underkeep (English) comes from English keep, from Middle English kepen, from Old English cēpan, from Proto-West Germanic *kōpijan, from Proto-Germanic kōpijaną, from Proto-Indo-European ǵab-.

underkeep (English): To keep under or in subjection; subdue; suppress;...

Definitions

  1. To keep under or in subjection; subdue; suppress;...

Ancestry of “underkeep”, step by step

underkeep traces back through two separate lines of ancestry.

via English keep

StepLanguageWordMeaning
1EnglishkeepTo continue in (a course or mode of action); to not intermit or fall from; to uphold or maintain
2Middle Englishkepento keep, guard, look after, watch
3Old Englishcēpanto seize, hold, observe
4Proto-West Germanic*kōpijan
5Proto-Germanickōpijanąto look after, observe; to watch, keep, care for
6Proto-Indo-Europeanǵab-

via English under

StepLanguageWordMeaning
1EnglishunderIn or at a lower level than; As a subject of;...
2Middle Englishunderunder
3Old Englishunderunder, beneath
4Proto-Germanicunderamong, between; under, beneath; under
5Proto-Indo-Europeanh₁entérbetween
6Proto-Indo-Europeanh₁enin; in, inside
Every word from Proto-Indo-European ǵab-Every word from Proto-Germanic kōpijanąEvery word from Proto-West Germanic *kōpijan
underkeep — Etymology, Origin & Word History | Etymology Explorer