responsibility

Googleで「define:responsibility」と入力する。最初に表示されるのは、

the social force that binds you to your obligations and 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
http://www.cogsci.princeton.edu/cgi-bin/webwn（WordNet 2.0 Search）
http://hp.vector.co.jp/authors/VA037273/

責任感を持つ者の無責任。無責任な者の責任。責任を持たない者の責任。