Unfriendly
Part of speech: adjective
Definition: not friendly; hostile unfavourable
Example sentence: To fail is a natural consequence of trying, To succeed takes time and prolonged effort in the face of unfriendly odds. To think it will be any other way, no matter what you do, is to invite yourself to be hurt and to limit your enthusiasm for trying again.
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: Religious celebrations, and the good will, high spirits and generosity that mark them, are wonderful occasions for understanding the potential of 'everyday multiculturalism', and how people from diverse faiths can connect and show they care, rather than go down parallel, sometimes hostile, roads.