English Reference
noun

redundancy

n.
US /ɹɪˈdəndənsi/ UK /ɹɪdˈʌndənsi/ re·dun·dan·cy UK spelling redundancies

  1. 01 B2 Upper Intermediate British English

    the situation of losing your job because your employer no longer needs you or the position.

    the state of being unemployed because one's position is no longer required by the employer; a dismissal or layoff.

    Simple

    The car factory announced two hundred redundancies due to falling sales.

    In context

    Following the merger, the new management team identified several overlapping roles, leading to a series of voluntary redundancies across the administrative department.

    Usage

    Commonly used in the phrase 'to face redundancy' or 'compulsory redundancy'.

    Pitfall
    He was given a redundancy. He was made redundant.

    While 'redundancy' is the noun for the situation, the common idiomatic expression for the action is 'to be made redundant'.

  2. 02 C1 Advanced Technical Computing

    extra parts or systems added to a machine so it keeps working if one part fails.

    the inclusion of extra components or circuits to ensure the continued operation of a system in the event of a single component failure.

    Simple

    The aircraft has triple redundancy in its flight control systems for safety.

    In context

    Engineers designed the server architecture with built-in redundancy to prevent data loss during hardware malfunctions.

    Usage

    Often used as an uncountable noun in technical contexts.

  3. 03 C1 Advanced Academic

    the use of words or data that are not necessary because they repeat what has already been said.

    the use of words or data that could be omitted without loss of meaning or function; needless repetition in language.

    Simple

    The editor removed the redundancy from the sentence to make it clearer.

    In context

    The professor criticised the student's essay for its excessive redundancy, noting that several paragraphs merely restated the thesis without adding new evidence.

    superfluityexcess
    concisenessbrevity

The redundancies are being made in an attempt to save £1.7bn over the next two years.

BBC News· 7 Sept 2026

Resiliency generally involves baking redundancies into a system and the baking process often has very high opportunity costs.

Aeon· 31 Aug 2026

From redundant + -cy.

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

This entry
Level B2 · Upper Intermediate
Frequency Frequent
Updated