Where does “ostage” come from?

ostage (Middle English) comes from Old French hostage, from Old French hoste, from Latin hostis, from Proto-Italic hostis, from Proto-Indo-European gʰóstis, from Proto-Indo-European -tis — Derives abstract/action nouns from verb roots.

Ancestry of “ostage”, step by step

ostage traces back through two separate lines of ancestry.

via Old French hostage

StepLanguageWordMeaning
1Old Frenchhostagehostage
2Old FrenchhosteAlternative form of oste; host
3Latinhostisan enemy of the state, a hostile, a stranger; the...
4Proto-Italichostisstranger, guest
5Proto-Indo-Europeangʰóstisstranger, host
6Proto-Indo-European-tisDerives abstract/action nouns from verb roots

via Old French ostage

StepLanguageWordMeaning
1Old FrenchostageAlternative form of hostage
Every word from Proto-Indo-European -tisEvery word from Proto-Indo-European gʰóstisEvery word from Proto-Italic hostis