What is a synonym for "hostile"?

Common synonyms include: aggressive, antagonistic, at loggerheads, belligerent, bitter, hateful.

Hostile

//ˈhɒstaɪl// adj, noun

adj, noun ·Common ·High school level

Noun

1
An enemy. in-plural
"The Japanese got their attack in first. About ten minutes after passing the U.S. aircraft, they spotted Hornet (local weather patterns temporarily concealing Enterprise). Things had improved a little bit compared to the Eastern Solomons, and three dozen F4F Wildcats on combat air patrol were vectored onto the oncoming hostiles, but once that initial task was accomplished, things began to collapse back into the cacophony and chaos that was all too familiar to those aboard the Enterprise, meaning that the end result was round about the same[…]"
2
troops belonging to the enemy's military forces wordnet

Adjective

1
Not friendly; appropriate to an enemy; showing the disposition of an enemy; showing ill will and malevolence or a desire to thwart and injure.
"a hostile force"
2
Aggressive; antagonistic.
3
Unwilling.
4
Being or relating to a hostile takeover. not-comparable
"Microsoft may go hostile in its bid for Yahoo! as soon as Friday, according to a published report."

Adjective

1
unsolicited and resisted by the management of the target company (used of attempts to buy or take control of a business) wordnet
2
not belonging to your own country's forces or those of an ally wordnet
3
very unfavorable to life or growth wordnet
4
characterized by enmity or ill will wordnet
5
impossible to bring into friendly accord wordnet