• The interior or inner part.
  • The left-hand side of a road if one drives on the left, or right-hand side if one drives on the right.
  • The side of a curved road, racetrack etc. that has the shorter arc length; the side of a racetrack nearer the interior of the course or some other point of reference.
  • The interior organs of the body, especially the guts.
  • A passenger within a coach or carriage, as distinguished from one upon the outside.


  • Of or pertaining to the inner surface, limit or boundary.
  • Nearer to the interior or centre of something.
  • Originating from, arranged by, or being someone inside an organisation.
  • Legally married to or related to (e.g. born in wedlock to), and/or residing with, a specified other person (parent, child, or partner); existing between two such people.
  • Toward the batter as it crosses home plate.
  • At or towards or the left-hand side of the road if one drives on the left, or right-hand side if one drives on the right.


  • Within or towards the interior of something; within the scope or limits of something (a place), especially a building.
  • Indoors.
  • Intimately, secretly; without expressing what one is feeling or thinking.


Opposite words


  • From Middle English ynneside; equivalent to in- + side.
  • Compare German Innenseite ("inside"), Danish inderside ("inside"), Swedish insida ("inside"), Dutch binnenzijde ("inside"), German Low German Binnensied, Binnersied, Saterland Frisian Binnersiede ("inside").

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