English Reference
noun

exclusion

n.
US /ɪkˈskɫuʒən/ UK /ɛksklˈuːʒən/ ex·clu·sion UK spelling exclusions

  1. 01 B2 Upper Intermediate

    the act of not allowing someone to join a group or take part in an activity.

    the act of barring someone from participation or membership in a group or activity.

    Simple

    The exclusion of certain students from the club felt very unfair to the rest of the class.

    In context

    The systematic exclusion of minority voices from the decision-making process led to a formal complaint being filed with the board.

    Usage

    Often used with the preposition 'of' followed by the person or group being left out.

  2. 02 C1 Advanced FormalTechnical Law

    something that is specifically not included in a contract or insurance plan.

    a specific provision in a legal document or insurance policy that removes coverage for certain risks or items.

    Simple

    Read the fine print to see if there is an exclusion for water damage in your home insurance.

    In context

    The policy contains a specific exclusion for pre-existing medical conditions, meaning the company will not pay for those treatments.

    Usage

    Commonly used in the plural form 'exclusions' when referring to a list in a contract.

    Teacher's tip

    This is a high-frequency term in business and legal English that students will encounter in contracts and terms of service.

  3. 03 C2 Proficiency TechnicalFormal Science

    the act of pushing something out of a space.

    the act of expelling or forcing something out from a contained area.

    Simple

    The exclusion of air from the container helps keep the food fresh for longer.

    In context

    The rapid exclusion of gases from the chamber caused a sudden drop in internal pressure.

    Teacher's tip

    This sense is quite rare in everyday conversation and is mostly found in scientific or very formal academic writing.

Usage exclusion criterion

Campaigners fear that if the same interpretation of the law is applied elsewhere, women displaced by future projects could face the same exclusions.

Al Jazeera· 15 Aug 2026

I followed David’s journey from exclusion to belonging.

The Guardian· 31 Jul 2026

From Middle English exclusion, exclusioun, from Old French [Term?] and Latin exclusiō, from exclūdō. By surface analysis, exclude + -sion.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin Latin exclusiō
Level C1 · Advanced
Frequency Frequent
Updated