adverse 
英 [ˈædvɜːs]  美 [ædˈvɜrs] 
adj. 不利的；有害的；相反的，逆的；敌对的

例句：
He has experienced no adverse reactions from the new drug treatment. 

新药治疗没有给他带来不良反应。

The match was called off because of adverse weather conditions. 

由于天气状况不佳，比赛被取消了。

He never let himself be discouraged by any adverse circumstances. 

他从不因遇到逆境而灰心丧气。

They ignored the adverse criticism and carried on. 

他们不顾负面批评坚持下去。