Where does “underexercise” come from?

underexercise (English) comes from English exercise, from Middle English exercise, from Old French exercise, from Latin exercitium, from Latin exerceo, from Latin arceo, from Proto-Italic arkeō, from Proto-Indo-European h₂erk- — to protect, guard, hold, lock.

underexercise (English): Insufficient exercise; To take too little...

Definitions

  1. Insufficient exercise; To take too little...

Ancestry of “underexercise”, step by step

underexercise traces back through two separate lines of ancestry.

via English exercise

StepLanguageWordMeaning
1EnglishexerciseAny activity designed to develop or hone a skill...
2Middle Englishexercise
3Old Frenchexercise
4Latinexercitiumexercise, practice
5LatinexerceoI keep busy, keep at work, drive on; occupy,...
6LatinarceoI shut up, enclose; box in; I keep off, ward off;...
7Proto-Italicarkeōto contain
8Proto-Indo-Europeanh₂erk-to protect, guard, hold, lock

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 h₂erk-