Belonging or appropriate to an enemy; showing the disposition of an enemy; showing ill will and malevolence, or a desire to thwart and injure; occupied by an enemy or enemies; inimical; unfriendly; as, a hostile force; hostile intentions; a hostile country; hostile to a sudden change.

An enemy; esp., an American Indian in arms against the whites; -- commonly in the plural.

Of, relating to, or characteristic of an enemy

very unfriendly; "a hostile attitude"

very unfavorable to life or growth; "a hostile climate"; "an uncongenial atmosphere"; "an uncongenial soil"; "the unfriendly environment at high altitudes"

Refers to a player of the enemy team, AWACS to planes: "Contact, bullseye 0-7-6, 23, hostile" (enemy player direction 76 degrees, 23 miles from target)