Hostile
Part of speech: noun
Definition: An enemy; esp., an American Indian in arms against the whites; -- commonly in the plural.
Part of speech: adjective
Definition: 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
Example sentence: Poetry is not a genre in harmony with the modern world; its innermost nature is hostile or indifferent to the dogmas of modern times, progress and the cult of the future.
Unfriendly
Part of speech: adjective
Definition: not friendly; hostileunfavourable
Example sentence: In London, people can be so... well, it's not even a case of people being unkind or unfriendly. You just don't make any contact in London. You go from A to B with your eyes on the pavement.