English Reference
noun

sides

n.
US /ˈsaɪdz/ UK /sˈaɪdz/ sides

  1. 01 A1 Beginner

    the flat surfaces or edges of an object.

    the bounding surfaces or edges of a three-dimensional object or two-dimensional shape.

    Simple

    A cube has six flat sides that are all the same size.

    In context

    The architect designed the building with glass sides to ensure that every office received an equal amount of natural light throughout the day.

  2. 02 A2 Elementary

    the different teams or groups in a game, argument, or war.

    opposing factions, teams, or parties in a conflict, competition, or debate.

    Simple

    Both sides agreed to stop fighting and talk about a peace deal.

    In context

    In a legal dispute of this magnitude, both sides usually spend months reviewing evidence before the actual trial begins.

  3. 03 B1 Intermediate

    the different ways of looking at a problem or situation.

    distinct aspects, perspectives, or points of view regarding a single issue or situation.

    Simple

    You need to consider all sides of the argument before making a choice.

    In context

    The documentary attempts to show all sides of the environmental crisis, interviewing both corporate leaders and local activists.

  4. 04 B1 Intermediate Cooking

    small portions of food served with a main meal.

    subsidiary food items served alongside a primary course.

    Simple

    We ordered a steak with sides of fries and a green salad.

    In context

    The restaurant is famous for its creative sides, which often overshadow the traditional meat dishes on the menu.

    accompanimentsside orders
  5. 05 B2 Upper Intermediate InformalSlang Medicine

    unwanted physical feelings caused by a medicine.

    a shortened form of 'side effects', referring to secondary, typically undesirable, results of a drug or medical treatment.

    Simple

    The doctor warned me that these pills might have some nasty sides.

    In context

    Patients often stop taking their medication because the sides, such as nausea and fatigue, become too difficult to manage daily.

    Usage

    Commonly used in medical or fitness communities as a clipping of 'side effects'.

Usage sides of the border

Start with your arms by your sides and then raise them up.

BBC News· 12 Aug 2026

Open windows on opposite sides of the house to encourage air flow - releasing trapped warm air and allowing in cooler air.

BBC News· 22 Jun 2026
This entry
Level B2 · Upper Intermediate
Frequency Common
Updated