English Reference
noun · verb

discipline

n. · v.
US /ˈdɪsəpɫən/ UK /dˈɪsɪplˌɪn/ dis·ci·pline UK spelling disciplines

  1. 01 B2 Upper Intermediate

    n.the ability to control your own behavior and work hard without needing others to tell you what to do.

    n.the quality of being able to behave and work in a controlled way which involves obeying particular rules or standards.

    Simple

    It takes a lot of discipline to get up at 5:00 AM every day to exercise.

    In context

    Maintaining the discipline required for professional-level athletic training demands significant mental fortitude and a strict adherence to nutritional guidelines.

    Usage

    Often used as an uncountable noun when referring to a personal quality.

    self controlwillpowerrestraint
  2. 02 B2 Upper Intermediate

    n.a system of rules used to keep order in a group, like a school or the army.

    n.the practice of training people to obey rules or a code of behavior, often using punishment to correct disobedience.

    Simple

    The teacher struggled to maintain discipline in the noisy classroom.

    In context

    The military relies on strict discipline to ensure that commands are followed instantly and accurately during high-pressure operations.

    Usage

    Commonly used with verbs like 'maintain', 'enforce', or 'impose'.

  3. 03 C1 Advanced AcademicFormal Education

    n.a particular area of study, especially at a university.

    n.a branch of knowledge, typically one studied in higher education.

    Simple

    Sociology is a relatively modern academic discipline.

    In context

    The conference brought together experts from various scientific disciplines to discuss the multifaceted impacts of climate change on coastal ecosystems.

    Usage

    Countable in this sense.

  4. 04 B2 Upper Intermediate

    v.to punish someone for breaking rules so they learn to behave better in the future.

    v.to punish or penalize someone for an offense or failure to follow regulations.

    Simple

    The company decided to discipline the employee for being late three times in one week.

    In context

    The regulatory body has the power to discipline members who fail to meet the established ethical standards of the profession.

    Usage

    Transitive verb; always requires an object.

  5. 05 C1 Advanced Formal

    v.to train yourself to do something in a controlled and regular way.

    v.to train oneself or others to act in accordance with a particular set of rules or a specific routine.

    Simple

    She disciplined herself to write at least 500 words every morning.

    In context

    He had disciplined his mind to ignore distractions, allowing him to focus entirely on the complex mathematical proof before him.

Usage new discipline · recent discipline · scientific discipline

Relentless discipline on the training pitch as he drills his blueprint into your nervous system.

The Guardian· 13 Aug 2026

To answer Drake’s third question – how many of those planets are capable of sustaining life – a new scientific discipline has emerged: astrobiology, the study of life among the stars.

The Guardian· 11 Aug 2026

From Middle English [Term?], from Anglo-Norman, from Old French descipline, from Latin disciplina (“instruction”), from discipulus (“pupil”), influenced by disco (“to learn”), from Proto-Indo-European *dek- (“(cause to) accept”).

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

This entry
Origin ine-pro *dek-
Level B2 · Upper Intermediate
Frequency Common
Updated