Where does “undertenancy” come from?

undertenancy (English) comes from English tenancy, from English tenant, from Middle English tenaunt, from Anglo-Norman tenaunt, from Old French tenant, from Latin tenens, from Latin teneō, from Proto-Italic tenēō — to stretch, to extend.

undertenancy (English): The tenancy of an undertenant; a subletting...

Definitions

  1. The tenancy of an undertenant; a subletting...

Ancestry of “undertenancy”, step by step

undertenancy traces back through two separate lines of ancestry.

via English tenancy

StepLanguageWordMeaning
1EnglishtenancyThe occupancy of property, etc., under a lease,...
2EnglishtenantOne who pays a fee in return for the use of...
3Middle Englishtenaunt
4Anglo-NormantenauntAlternative form of tenant; Alternative form of...
5Old Frenchtenantholder
6Latintenensholding, having; restraining; knowing, grasping,...
7Latinteneōto hold, have; to grasp
8Proto-Italictenēōto hold
9Proto-Indo-Europeanten-to stretch, to extend

via English under

StepLanguageWordMeaning
1EnglishunderIn or at a lower level than; As a subject of;...
2Middle Englishunderunder
3Old Englishunderunder, beneath
4Proto-Germanicunderamong, between; under, beneath; under
5Proto-Indo-Europeanh₁entérbetween
6Proto-Indo-Europeanh₁enin; in, inside
Every word from Proto-Indo-European ten-