Where does “táin” come from?

táin (Old Irish) comes from Proto-Celtic ageti, from Proto-Indo-European h₂éǵeti, from Proto-Indo-European h₂eǵ- — to drive.

Ancestry of “táin”, step by step

StepLanguageWordMeaning
1Proto-Celticagetito drive
2Proto-Indo-Europeanh₂éǵetito be driving
3Proto-Indo-Europeanh₂eǵ-to drive
Every word from Proto-Indo-European h₂eǵ- →Every word from Proto-Indo-European h₂éǵeti →Every word from Proto-Celtic ageti →
táin — Etymology, Origin & Word History | Etymology Explorer