adverse

Definitions

ad- (toward, against) + vers (turned) = 'turned against.' Adverse conditions are turned against you — adverse weather, adverse effects, an adverse reaction. The same ad-vert that means 'turn toward' (advertise) here turns hostile.

Common Collocations

• 1.adverse effect不利影响；副作用
• 2.adverse weather恶劣天气
• 3.adverse reaction不良反应
• 4.adverse conditions不利条件

Example Sentences

• 1.

  The drug can have serious adverse effects.

• 2.

  The flight was delayed by adverse weather.

• 3.

  Sales fell sharply under adverse economic conditions.

Easily Confused

adverse vs averse — adverse means harmful/unfavorable and describes things (adverse weather, adverse effects); averse means having a strong dislike and describes people (averse to risk). You are averse to something; conditions are adverse.