Of, or belonging to, morals; treating of the moral feelings or duties; containing percepts of morality; moral; as, ethic discourses or epistles; an ethical system; ethical philosophy.
- A set of principles of right conduct.
- A theory or a system of moral values: "An ethic of service is at war with a craving for gain” ( Gregg Easterbrook).
- The study of the general nature of morals and of the specific moral choices to be made by a person; moral philosophy.
- The rules or standards governing the conduct of a person or the members of a profession: medical ethics.