Where does “idir-” come from?

idir- (Irish) comes from Irish idir, from Old Irish eter, from Proto-Celtic enter, from Proto-Indo-European h₁entér, from Proto-Indo-European h₁en — in; in, inside.

idir- (Irish): inter-, mid-

Definitions

  1. inter-, mid-

Ancestry of “idir-”, step by step

StepLanguageWordMeaning
1Irishidirbetween; both; partly...partly..., half...half..
2Old Irisheterbetween, among
3Proto-Celticenterbetween
4Proto-Indo-Europeanh₁entérbetween
5Proto-Indo-Europeanh₁enin; in, inside

Words derived from “idir-”

Every word from Proto-Indo-European h₁en →Every word from Proto-Indo-European h₁entér →Every word from Proto-Celtic enter →