Definition of ethical

• of or relating to the philosophical study of ethics; "ethical codes"; "ethical theories"
• conforming to accepted standards of social or professional behavior; "an ethical lawyer"; "ethical medical practice"; "an ethical problem"; "had no ethical objection to drinking"; "Ours is a world of nuclear giants and ethical infants"- Omar N. Bradley
• adhering to ethical and moral principles; "it seems ethical and right"; "followed the only honorable course of action"; "had the moral courage to stand alone"