B1preposition5K

Within

UK /["/wɪˈðɪn/"]/US /["/wɪˈðɪn/"]/

Definition

before a particular period of time has passed; during a particular period of time

In simple words: inside or in a certain area

Examples

  • The treasure is hidden within the ancient ruins.
  • Please remain within the marked boundaries of the park.
  • She felt a sense of peace within herself after the meditation.
  • You should complete the project within the given timeframe.
  • Within the walls of the castle, many secrets are kept.

Usage notes

Use 'within' to indicate something is contained or limited inside a space or time. It’s more formal than 'in' and is often used in writing or official contexts.

Grammar pattern

within + object

Memory hint

Think of 'within' as 'with-in' — imagine being inside a box.

Collocations

  • within reach
  • within minutes
  • within the limits

Synonyms

  • inside
  • in
  • interior to

Antonyms

  • outside
  • beyond

Common mistakes

  • Confused with 'with in', which is incorrect.
  • Used incorrectly with non-physical spaces, such as emotions.
  • Omitted the object after 'within' when necessary.