Where does “*truɨ” come from?

*truɨ (Proto-Brythonic) comes from Proto-Celtic *trei, from Proto-Indo-European terh₂- — to cross over, pass through, overcome.

Ancestry of “*truɨ”, step by step

StepLanguageWordMeaning
1Proto-Celtic*treithrough
2Proto-Indo-Europeanterh₂-to cross over, pass through, overcome

Words derived from “*truɨ”

Every word from Proto-Indo-European terh₂- →Every word from Proto-Celtic *trei →