Hostile

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late 16th century: from French, or from Latin hostilis, from hostis ‘stranger, enemy’.

wiktionary

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Borrowed from Middle French hostile, from Latin hostīlis, from hostis(“enemy”). Displaced Old English fēondlīċ.

etymonline

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hostile (adj.)

late 15c., from French hostile "of or belonging to an enemy" (15c.) or directly from Latin hostilis "of an enemy, belonging to or characteristic of the enemy; inimical," from hostis, in earlier use "a stranger, foreigner," in classical use "an enemy," from PIE root *ghos-ti- "stranger, guest, host." The noun meaning "hostile person" is recorded from 1838, American English, a word from the Indian wars. Related: Hostilely.