Where does “thirde” come from?

thirde (Middle English) comes from Old English þridda, from Proto-West Germanic *þriddjō, from Proto-Germanic þridjô, from Proto-Indo-European tretyós, from Proto-Indo-European tr̥tyós, from Proto-Indo-European tréyes — three.

Ancestry of “thirde”, step by step

StepLanguageWordMeaning
1Old Englishþriddathird
2Proto-West Germanic*þriddjōthird
3Proto-Germanicþridjôthird
4Proto-Indo-Europeantretyós
5Proto-Indo-Europeantr̥tyósthird
6Proto-Indo-Europeantréyesthree

Words derived from “thirde

Every word from Proto-Indo-European tréyes