Where does “tut” come from?

tut (Middle Welsh) comes from Proto-Brythonic tʉd, from Proto-Celtic toutā, from Proto-Indo-European tewtéh₂, from Proto-Indo-European tewh₂- — to swell; to crowd; to be strong.

Ancestry of “tut”, step by step

StepLanguageWordMeaning
1Proto-Brythonictʉdpeople
2Proto-Celtictoutāpeople, tribe; tribal land
3Proto-Indo-Europeantewtéh₂people, tribe
4Proto-Indo-Europeantewh₂-to swell; to crowd; to be strong

Words derived from “tut”

Every word from Proto-Indo-European tewh₂- →Every word from Proto-Indo-European tewtéh₂ →Every word from Proto-Celtic toutā →
tut — Etymology, Origin & Word History | Etymology Explorer