hostile
/ˈhɒstaɪl/
noun
Meaning
(chiefly in the plural) An enemy.
adjective
Meaning
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 country"
Aggressive, antagonistic.
Unwilling
Of a hostile takeover.
"Microsoft may go hostile in its bid for Yahoo as soon as Friday, according to a published report."
Synonyms