(philosophy) The study of principles relating to right and wrong conduct. / Morality. / The standards that govern the conduct of a person, especially a member of a profession.

(philosophy, not comparable) Of or relating to the study of ethics. / (not comparable) Of or relating to the accepted principles of right and wrong, especially those of some organization or profession.

An ethical drug, one only dispensed on the prescription of a physician.

Moral, relating to morals.

A set of principles of right and wrong behaviour guiding, or representative of, a specific culture, society, group, or individual. / The morality of an action.

In an ethical manner. / Concerning ethics.

The application of ethics.

plural of ethical

(rare) The state or quality of being ethical.

The state, quality, or manner of being ethical.