obligation
noun
the social force that binds you to the courses of action demanded by that force
“we must instill a sense of duty in our children”
“every right implies a responsibility; every opportunity, an obligation; every possession, a duty”
the state of being obligated to do or pay something
“he is under an obligation to finish the job”
a personal relation in which one is indebted for a service or favor
Synonymsindebtednessa written promise to repay a debt
a legal agreement specifying a payment or action and the penalty for failure to comply
Source: WordNet 3.1, Princeton University
