Where does “Taoiseach” come from?

Taoiseach derives from Old Irish toísech, from Primitive Irish ᚈᚑᚃᚔᚄᚐᚉᚔ, from Proto-Celtic towissākos, ultimately from Proto-Indo-European weyd-.

Taoiseach (English): The head of the government of Ireland, comparable to a prime minister of a Commonwealth of Nations country

Definitions

  1. The head of the government of Ireland, comparable to a prime minister of a Commonwealth of Nations country

Ancestry of “Taoiseach”, step by step

StepLanguageWordMeaning
1IrishTaoiseachHead of the Irish government, comparable to a UK...
2Old Irishtoísechleader, chief; first-mentioned thing or person;...
3Primitive Irishᚈᚑᚃᚔᚄᚐᚉᚔ
4Proto-Celtictowissākoschief, primary, first
5Proto-Celtic*towissusact of leading, beginning
6Proto-Celticwissusact of discovering, finding out; knowledge
7Proto-Indo-Europeanwéydtus
8Proto-Indo-Europeanweyd-to see
Every word from Proto-Indo-European weyd-Every word from Proto-Indo-European wéydtusEvery word from Proto-Celtic wissus