Where does “expungeth” come from?

expungeth (English) comes from English expunge, from Latin expungo, from Latin pungō, from Proto-Italic pungō, from Proto-Indo-European pewǵ- — to punch, fist-fight; to prick, poke, stab.

Ancestry of “expungeth”, step by step

expungeth traces back through two separate lines of ancestry.

via English expunge

StepLanguageWordMeaning
1EnglishexpungeTo erase or strike out; To eliminate completely;...
2LatinexpungoI strike out, cross out, blot out, erase; I...
3Latinpungōto prick; to puncture; to sting
4Proto-Italicpungōto prick, to sting
5Proto-Indo-Europeanpewǵ-to punch, fist-fight; to prick, poke, stab

via English eth

StepLanguageWordMeaning
1EnglishethA letter introduced into Old English to...
Every word from Proto-Indo-European pewǵ-Every word from Proto-Italic pungōEvery word from Latin pungō