Where does “hostiler” come from?

hostiler (Middle French) comes from Old French hostelier, from Medieval Latin hostilarius, from Latin hospitāle, from Latin hospitālis, from Latin hospes, from Proto-Italic hostipotis, from Proto-Italic χostipotis, from Proto-Indo-European gʰostipotis — to drink.

Ancestry of “hostiler”, step by step

StepLanguageWordMeaning
1Old Frenchhostelier
2Medieval Latinhostilarius
3Latinhospitālea guestroom
4LatinhospitālisOf or pertaining to a host or guest
5Latinhospeshost; guest, visitor; stranger; foreigner
6Proto-Italichostipotishost
7Proto-Italicχostipotis
8Proto-Indo-Europeangʰostipotismaster of guests
9Proto-Indo-Europeanpótismaster, ruler; husband
10Proto-Indo-Europeanph₃tis
11Proto-Indo-Europeanpeh₃-to drink

Words derived from “hostiler

Every word from Proto-Indo-European peh₃-