responsibility in WordNet English dictionary

1. 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"- John D.Rockefeller Jr
   duty  responsibility  obligation 
   
2. the proper sphere or extent of your activities
   "it was his province to take care of himself"
   province  responsibility 
   
3. a form of trustworthiness; the trait of being answerable to someone for something or being responsible for one's conduct
   "he holds a position of great responsibility"
   responsibility  responsibleness