obligation

noun

1. the social force that binds you to the courses of action demanded by that force

   noun.act

   Examples

   Every right implies a responsibility; every opportunity, an obligation; every possession, a duty.

   Synonyms duty responsibility

   Source: WordNet 3.0

2. the state of being obligated to do or pay something

   noun.state

   Examples

   He is under an obligation to finish the job.

   Source: WordNet 3.0

3. a personal relation in which one is indebted for a service or favor

   noun.linkdef

   Synonyms indebtedness

   Source: WordNet 3.0

4. a written promise to repay a debt

   noun.possession

   Synonyms certificate of indebtedness debt instrument

   Source: WordNet 3.0

5. a legal agreement specifying a payment or action and the penalty for failure to comply

   noun.communication

   Source: WordNet 3.0

6. The act of obligating.

   noun

   Source: webster1913