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ethical

American  
[eth-i-kuhl] / ˈɛθ ɪ kəl /

adjective

  1. pertaining to or dealing with morals or the principles of morality; pertaining to right and wrong in conduct.

  2. being in accordance with the rules or standards for right conduct or practice, especially the standards of a profession.

    It was not considered ethical for physicians to advertise.

    Synonyms:
    honorable, virtuous, righteous, honest, upright, moral
    Antonyms:
    immoral
  3. (of drugs) sold only upon medical prescription.


ethical British  
/ ˈɛθɪkəl /

adjective

  1. in accordance with principles of conduct that are considered correct, esp those of a given profession or group

  2. of or relating to ethics

  3. (of a medicinal agent) available legally only with a doctor's prescription or consent

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of ethical

First recorded in 1600–10; ethic + -al 1

Explanation

For someone who is honest and follows good moral standards, use the adjective ethical. An ethical teacher will grade your papers honestly — even if she catches you sticking your tongue out at her. Ethical comes from the Greek ethos "moral character" and describes a person or behavior as right in the moral sense - truthful, fair, and honest. Sometimes the word is used for people who follow the moral standards of their profession. An ethical lawyer or doctor does not try to take advantage of the client or patient's unfortunate situation. If something has happened and you are not sure what the right thing to do is, you are having an ethical dilemma.

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

As first reported by The Times, former chief executive Hugh Hall, who resigned from the organisation in August, has been reported to the Ethical Standards Commissioner – Scotland's ethics watchdog.

From BBC • Dec. 16, 2025

People for the Ethical Treatment of Animals says weight-pull competitions exploit a dog’s desire to make people happy but puts dogs at risk of muscle strain and joint damage.

From The Wall Street Journal • Nov. 20, 2025

A 2015 investigation by People for the Ethical Treatment of Animals documented the practices at one hermit crab supplier in Orlando, Florida, where thousands of crabs were packed into pens.

From Slate • Aug. 19, 2025

Ethical hacker Aras Nazarovas from Cybernews first alerted the firm about the security hole after finding the location of the online storage used by the apps by analysing the code that powers the services.

From BBC • Mar. 29, 2025

If you’re someone who was sent to the Ethical Culture School, then you aren’t going to be intimidated by a row of Cambridge dons arrayed in judgment against you.

From "Outliers" by Malcolm Gladwell