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

a non-involved eye witness to a crime but refuses to testify when subpoenaed

characterized by enmity or ill will; "a hostile nation"; "a hostile remark"; "hostile actions"

not belonging to your own country's forces or those of an ally; "hostile naval and air forces"

impossible to bring into friendly accord; "hostile factions"

Often refers to an unsolicitated and unwanted bid by the target company. It rejects this bid and indicates that the company does not want to be acquired by that bidder.

used of attempts to buy or take control of a business; "hostile takeover"; "hostile tender offer"

marked by features that oppose constructive treatment or development; "not able to accomplish much in such a hostile environment"