Where does “infirme” come from?

infirme (Middle English) comes from Latin īnfirmus, from Latin īn-, from Latin în, from Latin en, from Proto-Italic en, from Proto-Indo-European h₁én — in.

Ancestry of “infirme”, step by step

StepLanguageWordMeaning
1Latinīnfirmusweak, feeble
2Latinīn-un-, non-, not
3Latinînin, at, on, upon, from (space)
4Latinenlookǃ beholdǃ; reallyǃ?; come onǃ
5Proto-Italicenin
6Proto-Indo-Europeanh₁énin

Words derived from “infirme

Every word from Proto-Indo-European h₁én