Where does “keepeth” come from?

Keepeth comes from Middle English -th and Old English -þ, derived from Proto-Germanic -iþō, ultimately from Proto-Indo-European ǵab- combined with -ti and -tós.

keepeth (English): third-person singular simple present indicative...

Definitions

  1. third-person singular simple present indicative...

Ancestry of “keepeth”, step by step

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-
Every word from Proto-Indo-European ǵab-Every word from Proto-Germanic kōpijanąEvery word from Proto-West Germanic *kōpijan