Where does “espouseth” come from?

espouseth (English) comes from English espouse, from Middle English espousen, from Old French espouser, from Latin spōnsō, from Latin spōnsus, from Latin spondeō, from Proto-Italic spondeō, from Proto-Indo-European spondéyeti — to libate.

espouseth (English): Third-person singular simple present indicative...

Definitions

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

Ancestry of “espouseth”, step by step

espouseth traces back through two separate lines of ancestry.

via English espouse

StepLanguageWordMeaning
1EnglishespouseTo become/get married to; To accept, support, or...
2Middle Englishespousen
3Old Frenchespouserto marry
4Latinspōnsōto betroth
5Latinspōnsusa groom
6Latinspondeōto promise, bind or pledge oneself, contract, vow
7Proto-Italicspondeōto promise, to pledge
8Proto-Indo-Europeanspondéyeti
9Proto-Indo-Europeanspend-to libate

via English eth

StepLanguageWordMeaning
1EnglishethA letter introduced into Old English to...
Every word from Proto-Indo-European spend-Every word from Proto-Indo-European spondéyetiEvery word from Proto-Italic spondeō