Categorical Imperative: A central tenet of deontological ethics developed by Immanuel Kant, which states that one should act only in accordance with that maxim through which one can at the same time will that it become a universal law.
Moral Duty: The obligations or responsibilities that individuals have to act in an ethical manner, as defined by deontological principles.
Moral Absolutism: The belief that there are absolute moral standards that must be adhered to regardless of the consequences, which is a key principle of deontological ethics.