Where does “túsú” come from?

túsú (Irish) comes from Irish túsaigh, from Irish tús, from Old Irish tús, from Proto-Celtic *towissus, from Proto-Celtic wissus, from Proto-Indo-European wéydtus, from Proto-Indo-European weyd- — to see.

Ancestry of “túsú”, step by step

StepLanguageWordMeaning
1Irishtúsaighto start, begin, initialize
2Irishtúsbeginning; forward, leading, position;...
3Old Irishtúsbeginning; forefront
4Proto-Celtic*towissusact of leading, beginning
5Proto-Celticwissusact of discovering, finding out; knowledge
6Proto-Indo-Europeanwéydtus
7Proto-Indo-Europeanweyd-to see
Every word from Proto-Indo-European weyd-Every word from Proto-Indo-European wéydtusEvery word from Proto-Celtic wissus