Where does “tou” come from?

tou (Old Portuguese) comes from Latin tuus, from Proto-Italic towos, from Proto-Indo-European túh₂ — you, thou.

Ancestry of “tou”, step by step

StepLanguageWordMeaning
1Latintuusyour
2Proto-Italictowosyour
3Proto-Indo-Europeantúh₂you, thou

Words derived from “tou”

Every word from Proto-Indo-European túh₂ →Every word from Proto-Italic towos →Every word from Latin tuus →