Where does “sinn féin” come from?

sinn féin (Irish) comes from Irish sinn, from Old Irish sinni, from Old Irish sisni, from Old Irish snisni, from Proto-Celtic snisni, from Proto-Celtic snīs, from Proto-Indo-European nō̆s — we.

sinn féin (Irish): Sinn Fein

Definitions

  1. Sinn Fein

Ancestry of “sinn féin”, step by step

sinn féin traces back through two separate lines of ancestry.

via Irish sinn

StepLanguageWordMeaning
1Irishsinnwe, us; we
2Old Irishsinniwe
3Old Irishsisniwe, us
4Old Irishsnisniwe
5Proto-Celticsnisni—
6Proto-Celticsnīswe
7Proto-Indo-Europeannō̆swe

via Irish féin

StepLanguageWordMeaning
1Irishféinself; own; even, only
2Old Irishféinself; one's own
3Proto-Celtic*swesin—
4Proto-Indo-Europeanswéself

Words derived from “sinn féin”

Every word from Proto-Indo-European nō̆s →Every word from Proto-Celtic snīs →Every word from Proto-Celtic snisni →