What does ethics mean?
Ethics has two closely related meanings. As a field of study, it is the branch of philosophy that examines moral principles — what is right and wrong, good and bad, and how we ought to live. As an everyday term, it refers to the set of moral standards that guide a person's behaviour or govern a profession, as in medical ethics or a company's code of ethics. The word carries a serious, formal tone and appears frequently in discussions of law, medicine, journalism, business, and research, where clear standards of conduct matter most. It derives ultimately from the ancient Greek ēthikós, rooted in êthos, meaning character or custom. Understanding ethics is useful because it names both an intellectual tradition stretching back over two thousand years and the practical rules by which individuals and institutions earn trust.
nounThe branch of philosophy concerned with moral principles and questions of right and wrong conduct; also, the moral principles or standards that govern a person's behaviour or the conduct of a profession or organization.
- The philosophical study of moral principles and right and wrong conduct.
- A set of moral principles, especially those governing a profession, field, or organization.
"The journalist refused to reveal her sources on grounds of professional ethics."
"She teaches ethics at the university, covering everything from Aristotle to modern bioethics."
"Doctors are bound by strict medical ethics when handling patient information."
When meaning moral principles or standards, "ethics" functions as a plural noun taking plural verbs ("his ethics are admirable"). When denoting the philosophical discipline, it takes a singular verb ("ethics is fascinating").
"The lawyer's ethics were called into question after the scandal."
The English word "ethics" traces straight back to the ancient Greek word for a stable place to stand — the idea being that moral principles are where you plant your feet.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does ethics come from?
Ethics comes from the ancient Greek ēthikós, meaning "of or relating to character," which derives from êthos, signifying character, custom, or habit. The term passed into Latin as ethica and entered Middle French before appearing in English in the late Middle Ages, initially referring to the Aristotelian study of morals. Its sense broadened over time to cover both the philosophical discipline and any body of moral principles, especially professional ones. Related words include ethos, borrowed directly from the same Greek noun.
Related word forms
How ethics is actually used
Formal to neutral register. In philosophy contexts it is treated as a singular discipline ("ethics is the study of..."); when referring to moral standards it is usually plural ("the ethics of the situation"). Commonly used attributively in phrases like business ethics and medical ethics.
Easily confused with ethics
Ethics often refers to systematic principles or professional standards governing conduct, while morals typically refers to personal beliefs about right and wrong.
Ethos means the characteristic spirit, values, or culture of a community or institution, whereas ethics concerns moral principles of right and wrong.