Where does “seacht-” come from?

seacht- (Irish) comes from Irish seacht, from Old Irish secht, from Proto-Celtic sextam, from Proto-Indo-European septḿ̥ — seven.

seacht- (Irish): hepta-; sevenfold

Definitions

  1. hepta-; sevenfold

Ancestry of “seacht-”, step by step

StepLanguageWordMeaning
1Irishseachtseven
2Old Irishsechtseven
3Proto-Celticsextamseven
4Proto-Indo-Europeanseptḿ̥seven
Every word from Proto-Indo-European septḿ̥ →Every word from Proto-Celtic sextam →Every word from Old Irish secht →