Where does “hi” come from?

Hi comes from Old English hē, from Proto-Germanic ahwō, from Proto-Indo-European h₂ekʷeh₂, ultimately from Proto-Indo-European roots including ḱe-, skek-, and kew-, though the precise semantic development remains unclear.

hi (English): API; A friendly, informal, casual greeting said...

Definitions

  1. API; A friendly, informal, casual greeting said...

Ancestry of “hi”, step by step

hi traces back through two separate lines of ancestry.

via Middle English hey

StepLanguageWordMeaning
1Middle Englishheyhay; hey; Alternative form of heye
2Old Englishhey
3Proto-West Germanic*hiʀ
4Proto-Germanichīznominative plural masculine of *hiz; these, these...

via Middle English hy

StepLanguageWordMeaning
1Middle EnglishhyAlternative form of heo; Alternative form of he

Words derived from “hi

Every word from Proto-Germanic hīz