Where does “siathamh” come from?

siathamh (Scottish Gaelic) comes from Scottish Gaelic sia, from Old Irish sé, from Proto-Celtic swexs, from Proto-Indo-European swéḱs — six.

siathamh (Scottish Gaelic): sixth

Definitions

  1. sixth

Ancestry of “siathamh”, step by step

StepLanguageWordMeaning
1Scottish Gaelicsiasix
2Old Irishsésix
3Proto-Celticswexssix
4Proto-Indo-Europeanswéḱssix
Every word from Proto-Indo-European swéḱs →Every word from Proto-Celtic swexs →Every word from Old Irish sé →