Where does “work-intensive” come from?

work-intensive (English) comes from English intensive, from Middle French intensif, from Medieval Latin intensivus, from Latin intendere, from Latin intendo, from Latin in-, from Latin in, from Old Latin en — in.

work-intensive (English): Focusing on, requiring, or exacting a great deal...

Definitions

  1. Focusing on, requiring, or exacting a great deal...

Ancestry of “work-intensive”, step by step

work-intensive traces back through two separate lines of ancestry.

via English intensive

StepLanguageWordMeaning
1EnglishintensiveThorough; to a great degree; with intensity;...
2Middle Frenchintensif
3Medieval Latinintensivusintensive
4Latinintenderethird-person plural perfect active indicative of...
5LatinintendoI stretch out; I strain; I turn my attention to,...
6Latinin-un-, non-, not; in, within, inside
7Latininin, at, on, upon, from; within, while in; into,...
8Old Latinenin
9Proto-Italicenin
10Proto-Indo-Europeanh₁énin

via English work

StepLanguageWordMeaning
1Englishwork"Employment."; "Effort."; Sustained effort to...
2Middle Englishwerkwork
3Old Englishweorcwork, in various senses, including
4Proto-West Germanicwerkwork
5Proto-Germanicwerkąwork
6Proto-Indo-Europeanwérǵomwork
7Proto-Indo-Europeanwerǵ-to make
Every word from Proto-Indo-European h₁én