Where does “einigr” come from?

einigr (Old Norse) comes from Proto-Germanic ainagaz, from Proto-Germanic ainaz, from Proto-Indo-European óynos — one; single.

Ancestry of “einigr”, step by step

StepLanguageWordMeaning
1Proto-Germanicainagazonly; sole; singular; unique
2Proto-Germanicainazone; some
3Proto-Indo-Europeanóynosone; single

Words derived from “einigr”

Every word from Proto-Indo-European óynos →Every word from Proto-Germanic ainaz →Every word from Proto-Germanic ainagaz →
einigr — Etymology, Origin & Word History | Etymology Explorer