moral obligation

commitment to follow one's conscience

The term moral obligation has a number of meanings in moral philosophy, in religion, and in layman's terms. Generally speaking, when someone says of an act that it is a "moral obligation," they refer to a belief that the act is one prescribed by their set of values. Moral philosophers differ as to the origin of moral obligation, and whether such obligations are external to the agent (that is, are, in some sense, objective and applicable to all agents) or are internal (that is, are based on the agent's personal desires, upbringing, conscience, and so on).
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Noun
1. an obligation arising out of considerations of right and wrong; "he did it out of a feeling of moral obligation"
(hypernym) duty, responsibility, obligation

A duty which one owes, and which he ought to perform, but which he is not legally bound to fulfil.

These obligations are of two kinds 1st. Those founded on a natural right; as, the obligation to be charitable, which can never be enforced by law. 2d. Those which are supported by a good or valuable antecedent consideration; as, where a man owes a debt barred by the act of limitations, this cannot be recovered by law, though it subsists in morality and conscience; but if the debtor promise to pay it, the moral obligation is a sufficient consideration for the promise, and the creditor may maintain an action of assumpsit, to recover the money.
   

This entry contains material from Bouvier's Legal Dictionary, a work published in the 1850's.