Where does “high-functioning” come from?

high-functioning (English) comes from English high, from Middle English heigh, from Old English hēah, from Old English hām, from Proto-West Germanic haim, from Proto-Germanic haimaz, from Proto-Indo-European ḱóymos, from Proto-Indo-European ḱey- — to be lying down; to settle.

high-functioning (English): Functioning or operating at a high level; Able to...

Definitions

  1. Functioning or operating at a high level; Able to...

Ancestry of “high-functioning”, step by step

high-functioning traces back through two separate lines of ancestry.

via English high

StepLanguageWordMeaning
1EnglishhighElevated, extending above a base or average...
2Middle Englishheighhigh; Alternative form of hey; Alternative form...
3Old Englishhēahhigh, tall, lofty, high-class, exalted, sublime,...
4Old Englishhāmhome; village, community; village, hamlet, manor,...
5Proto-West Germanichaimhome
6Proto-Germanichaimazhome; house; village
7Proto-Indo-Europeanḱóymosof the home, belonging to the family; village,...
8Proto-Indo-Europeanḱey-to be lying down; to settle

via English functioning

StepLanguageWordMeaning
1Englishfunctioningpresent participle of function; Functional,...
Every word from Proto-Indo-European ḱey-Every word from Proto-Indo-European ḱóymosEvery word from Proto-Germanic haimaz