C1adjectiveformal2K

Adverse

UK /["/ˈædvɜːs//ədˈvɜːs/"]/US /["/ədˈvɜːrs//ˈædvɜːrs/"]/

Definition

negative and unpleasant; not likely to produce a good result

In simple words: Something that is harmful or unlucky.

Examples

  • **adverse change/circumstances/weather conditions**
  • Lack of money will have an **adverse effect** on our research programme.
  • They have attracted strong adverse criticism.
  • This drug is known to have adverse side effects.
  • The new proposal should help those in adverse circumstances.
  • Adverse weather conditions meant the rescue had to be abandoned.
  • preparing ourselves for a potentially adverse reaction

Usage notes

Often used in formal contexts, such as reports or analyses. Not typically used in casual conversation. It's important to be clear that 'adverse' indicates a negative outcome.

Grammar pattern

adverse + noun

Memory hint

Sounds like 'add-verse' — imagine adding something that makes a situation worse.

Collocations

  • adverse conditions
  • adverse effects
  • adverse reaction

Synonyms

  • harmful
  • unfavorable
  • negative
  • detrimental
  • hostile

Antonyms

  • favorable
  • advantageous

Common mistakes

  • Confused with 'inverse', which means opposite.
  • Used inappropriately in informal contexts where 'bad' or 'negative' may suffice.