hostile
US /ˈhɑː.stəl/
UK /ˈhɑː.stəl/

1.
showing or feeling opposition or dislike; unfriendly
:
•
The crowd became hostile after the announcement.
•
He gave me a hostile look.
2.
of or belonging to a military enemy
:
•
The soldiers encountered hostile forces.
•
They crossed into hostile territory.