Where does “tous” come from?

tous (Old French) comes from Latin tussis, from Proto-Italic tussis, from Proto-Indo-European tud-ti-s, from Proto-Indo-European (s)tewd-, from Proto-Indo-European stew- — to praise, laud.

Ancestry of “tous”, step by step

StepLanguageWordMeaning
1Latintussiscough
2Proto-Italictussis—
3Proto-Indo-Europeantud-ti-scough
4Proto-Indo-European(s)tewd-to push, to hit
5Proto-Indo-Europeanstew-to praise, laud

Words derived from “tous”

Every word from Proto-Indo-European stew- →Every word from Proto-Indo-European (s)tewd- →Every word from Proto-Indo-European tud-ti-s →
tous — Etymology, Origin & Word History | Etymology Explorer