Where does “sincērō” come from?

sincērō (Late Latin) comes from Latin sincērus, from Proto-Italic senkairos, from Proto-Indo-European ḱer-, from Proto-Indo-European kr̥-, from Proto-Indo-European ker- — army.

Ancestry of “sincērō”, step by step

StepLanguageWordMeaning
1Latinsincērusclean, pure, sound
2Proto-Italicsenkairos
3Proto-Indo-Europeanḱer-to grow, to make grow, to nourish; to plait,...
4Proto-Indo-Europeankr̥-to turn, to bend
5Proto-Indo-Europeanker-army

Words derived from “sincērō

Every word from Proto-Indo-European ker-Every word from Proto-Indo-European kr̥-Every word from Proto-Indo-European ḱer-