A2preposition1K

Inside

UK /["/ˌɪnˈsaɪd/"]/US /["/ˌɪnˈsaɪd/"]/

Definition

on or to the inner part of something/somebody; within something/somebody

In simple words: In the inner part or area of something.

Examples

  • Go inside the house.
  • Inside the box was a gold watch.
  • She made a film about what life was like inside the refugee camp.
  • You'll feel better with a good meal inside you.
  • Inside most of us is a small child screaming for attention.
  • The job is unlikely to be finished inside (of) a year.

Usage notes

Used to indicate something located within an area or object. Appropriate in both casual and formal contexts. Not typically used to refer to abstract concepts, rather to physical locations.

Grammar pattern

standalone preposition

Memory hint

Think of a toy box that's 'inside' a big room, filled with toys.

Collocations

  • inside information
  • inside joke
  • inside the house
  • inside out

Synonyms

  • within
  • indoors
  • in
  • inward
  • inner

Antonyms

  • outside

Common mistakes

  • Confusing with 'within' — 'inside' refers to physical space while 'within' can be abstract.
  • Using 'inside' with non-physical objects — ensure you're talking about actual spaces.