Where does “injoint” come from?

injoint (English) comes from English joint, from Middle English upon, from Middle English up-, from Old English ūp-, from Old English ūp, from Proto-Germanic upp, from Proto-Germanic ub, from Proto-Indo-European upó.

injoint (English): To disjoint; to separate; To join; to unite

Definitions

  1. To disjoint; to separate; To join; to unite

Ancestry of “injoint”, step by step

injoint traces back through two separate lines of ancestry.

via English joint

StepLanguageWordMeaning
1EnglishjointDone by two or more people or organisations...
2Middle Englishuponupon
3Middle Englishup-
4Old Englishūp-up-
5Old Englishūpup, from above
6Proto-Germanicuppup, upwards
7Proto-Germanicubunder
8Proto-Indo-Europeanupóunder, below
9Proto-Indo-Europeanh₃ewp-

via English in

StepLanguageWordMeaning
1EnglishinUsed to indicate location, inclusion, or position...
2Middle EnglishinAny kind of accomodation; particularly; A home or...
3Old Englishinin; Alternative form of inn
4Proto-West Germanic*in
Every word from Proto-Indo-European h₃ewp-