Where does “-sni” come from?

-sni (Old Irish) comes from Proto-Celtic snīs, from Proto-Indo-European nō̆s — we.

-sni (Old Irish): 1st person plural emphatic suffix

Definitions

  1. 1st person plural emphatic suffix

Ancestry of “-sni”, step by step

StepLanguageWordMeaning
1Proto-Celticsnīswe
2Proto-Indo-Europeannō̆swe
Every word from Proto-Indo-European nō̆s →Every word from Proto-Celtic snīs →