hostile  
adjective uk/ˈhɒs.taɪl/ us/ˈhɑː.stəl/
  (UNFRIENDLY)      
 C1 不友好的,敌对的
unfriendly and not liking something
  a hostile crowd 不友好的人群 
 The president had a hostile reception in Ohio this morning. 总统今天早上在俄亥俄州受到了不友好的接待。 
 - More examples
 - There has been a hostile reaction to the government's proposed tax increases.
 - The security forces exercised great restraint by not responding to hostile attacks and threats.
 - The company has managed to fight off a hostile takeover bid .
 - Every day they had to run the gauntlet of hostile journalists on their way to school.
 - He's famous for conducting hostile interviews with politicians.
 
  (DISAGREEING)      
 C1 不同意的
not agreeing with something
  I'm not hostile to (= against) the idea of change as such. 我并不反对作这样的改变。 
   (DIFFICULT)      
 C1 艰苦的,恶劣的;不利的
difficult or not suitable for living or growing
  hostile weather conditions 恶劣的天气条件 
 a hostile climate/environment 恶劣的气候/环境 
   (ENEMY)      
  [ before noun ]敌方的,敌人的 
connected with the enemy in a war
  hostile aircraft/forces 敌机/敌军 
   (COMPANIES)      
 敌意(收购,并购)
relating to situations in which one company wants to buy another company whose owners do not want to sell it
  The company convinced investors to reject a hostile bid from Enterprise Oil Plc worth £1.5 billion. 这家公司说服了投资者拒绝由企业原油公司提出的价值15亿美元的敌意收购方案。 
 a hostile merger 敌意(并购)