Obligation n. : The act of obligating.

Obligation n. : That which obligates or constrains; the binding power of a promise, contract, oath, or vow, or of law; that which constitutes legal or moral duty.

Obligation n. : Any act by which a person becomes bound to do something to or for anouther, or to forbear something; external duties imposed by law, promise, or contract, by the relations of society, or by courtesy, kindness, etc.

Obligation n. : The state of being obligated or bound; the state of being indebted for an act of favor or kindness; as, to place others under obligations to one.

Obligation n. : A bond with a condition annexed, and a penalty for nonfulfillment. In a larger sense, it is an acknowledgment of a duty to pay a certain sum or do a certain things.

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Taxonomy
obligations, species, requirement, Holy Days of Obligation, free encyclopedia, obligate, legal obligations, citizen, Constitutional requirement, Law of obligations, social obligations, Code of Canon Law, Canon Law states, search, Unsourced, course of action, contexts, penalty.

Defination from the web:
obligation is a requirement to take some course of action, whether legal or moral. ... These are generally legal obligations, which can incur a penalty for unfulfilment, although certain people are obliged to carry out certain ...