obligation


Concise Oxford English Dictionary © 2008 Oxford University Press:
obligation/ɒblɪˈɡeɪʃn/
noun
  • 1 an act or course of action to which a person is morally or legally bound.

    ■ the condition of being so bound.

  • 2 a debt of gratitude for a service or favour.
– phrases
day of obligation (in the Roman Catholic Church) a day on which all are required to attend Mass.
– derivatives
obligational adjective.
'obligation' also found in these Oxford entries:

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