Where does “Sinn Féin” come from?
Sinn Féin (English) comes from Irish sinn féin, 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.
Ancestry of “Sinn Féin”, step by step