Where does “tussis” come from?

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

Ancestry of “tussis”, step by step

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

Words derived from “tussis”

Every word from Proto-Indo-European stew- →Every word from Proto-Indo-European (s)tewd- →Every word from Proto-Indo-European tud-ti-s →