Where does “eretique” come from?

eretique (Old French) comes from Medieval Latin haereticus, from Ancient Greek αἱρετικός, from Ancient Greek αἱρέω, from Proto-Hellenic həřřéyō, from Proto-Indo-European sēr-, from Proto-Indo-European ser- — to flow; to guard; to bind, to tie together.

Ancestry of “eretique”, step by step

StepLanguageWordMeaning
1Medieval Latinhaereticusheretical; heretic
2Ancient Greekαἱρετικόςable to choose, factious
3Ancient Greekαἱρέωto take, grasp, seize; to win, gain; to convict,...
4Proto-Hellenichəřřéyō
5Proto-Indo-Europeansēr-to flow
6Proto-Indo-Europeanser-to flow; to guard; to bind, to tie together

Words derived from “eretique

Every word from Proto-Indo-European ser-Every word from Proto-Indo-European sēr-Every word from Proto-Hellenic həřřéyō