Where does “árpák” come from?

árpák (Hungarian) comes from Hungarian árpa, from Proto-Turkic arpa, from Proto-Iranian arpacyaH, from Proto-Iranian Hr̥pā́š ~ Hr̥pacáh, from Proto-Indo-Iranian Hr̥pā́ćš ~ Hr̥paćás, from Proto-Indo-Iranian -ā́ćš, from Proto-Indo-European -eḱés.

Ancestry of “árpák”, step by step

StepLanguageWordMeaning
1Hungarianárpabarley; stye, hordeolum
2Proto-Turkicarpabarley
3Proto-IranianarpacyaHbarley
4Proto-IranianHr̥pā́š ~ Hr̥pacáh
5Proto-Indo-IranianHr̥pā́ćš ~ Hr̥paćás
6Proto-Indo-Iranian-ā́ćšanimal and plant suffix
7Proto-Indo-European-eḱés
Every word from Proto-Indo-European -eḱésEvery word from Proto-Indo-Iranian -ā́ćšEvery word from Proto-Indo-Iranian Hr̥pā́ćš ~ Hr̥paćás