hostile
HOS-tuladjMeaning unfriendly; showing that you want to fight or oppose
Memory hook HOST-ILE: a HOST who wants a fight. Felix answers his door with a scowl and crossed arms: “No visitors!” He is the most hostile host on the street.
The cat gave the new puppy a hostile stare and a low hiss.
In context The visiting team expected a hostile crowd, but the home fans surprised them with polite applause and even a few friendly cheers.
Similar unfriendly, antagonistic, aggressive, combative
Opposite friendly, welcoming, amicable
From Latin hostilis, from hostis, “an enemy, a stranger.”