Necessary

Pronunciation: /ˈnɛsəˌsɛriː/

Necessary (adjective)

  1. required to achieve something or to make something happen
  2. something that cannot be avoided or done without

Examples

  • A password is necessary to access the account.
  • It is necessary to wear a helmet for safety.

Common collocations: necessary requirement, necessary step, make necessary changes, necessary consequence, necessary evil

Synonyms of Necessary

Formal

Neutral

Informal

Antonyms of Necessary

  • when something is not needed
  • when something is not required