Where does “eretnekek” come from?

eretnekek (Hungarian) comes from Hungarian eretnek, from Italian eretico, from Latin herēticus, 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 “eretnekek”, step by step

StepLanguageWordMeaning
1Hungarianeretnekheretical; heretic
2Italianereticoheretical; heretic
3Latinherēticus
4Ancient Greekαἱρετικόςable to choose, factious
5Ancient Greekαἱρέωto take, grasp, seize; to win, gain; to convict,...
6Proto-Hellenichəřřéyō
7Proto-Indo-Europeansēr-to flow
8Proto-Indo-Europeanser-to flow; to guard; to bind, to tie together
Every word from Proto-Indo-European ser-Every word from Proto-Indo-European sēr-Every word from Proto-Hellenic həřřéyō