English Reference
noun

ethics

n.
US /ˈɛθɪks/ UK /ˈɛθɪks/ ethics

  1. 01 B2 Upper Intermediate

    the ideas or rules that a person or group has about what is right and wrong.

    the moral principles that govern a person's behaviour or the conducting of an activity.

    Simple

    The company's ethics were questioned after they hid the truth about the accident.

    In context

    Personal ethics often dictate how an individual responds to pressure in the workplace, especially when faced with a choice between profit and honesty.

    Usage

    Often used as a plural noun with a plural verb.

  2. 02 B2 Upper Intermediate Formal

    a set of rules that people in a specific job must follow to be professional and fair.

    the formal standards or codes of conduct that govern the behaviour of members of a specific profession.

    Simple

    Medical ethics require doctors to keep their patients' information private.

    In context

    The committee is responsible for investigating any alleged breaches of professional ethics by members of the bar association.

    Usage

    Frequently appears in the phrase 'medical ethics' or 'legal ethics'.

    code of conductstandards
  3. 03 C1 Advanced Academic Science

    the area of study that looks at what it means to be good or bad.

    the branch of knowledge or philosophy that deals with moral principles.

    Simple

    She decided to take a class on ethics to understand different views on right and wrong.

    In context

    Ethics is a fundamental component of the philosophy curriculum, requiring students to engage with complex thought experiments regarding human agency.

    Usage

    When referring to the field of study, it is treated as a singular noun.

    moral philosophy

Some might argue children don't need school ethics classes if they already learn ethics from their parents and other adults in their lives.

Phys.org· 1 Sept 2026

They also reveal how they understand responsibility, ethics, social and moral norms, and their relationship with others.

Phys.org· 31 Aug 2026

From Middle English etik, from Middle French ethique, from Late Latin ethica, from Ancient Greek ἠθική (ēthikḗ), from ἠθικός (ēthikós, “of or for morals, moral, expressing character”), from ἦθος (êthos, “character, moral nature”).

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

This entry
Origin Ancient Greek ἠθική
Level B2 · Upper Intermediate
Frequency Common
Updated