Video shows what responsibility means. The state of being responsible, accountable, or answerable.. A duty, obligation or liability for which someone is held accountable.. The obligation to carry forward an assigned task to a successful conclusion. With responsibility goes authority to direct and take the necessary action to ensure success. (JP 1-02 Department of Defense Dictionary of Military and Associated Terms).. responsibility synonyms: responsibleness. Responsibility Meaning. How to pronounce, definition audio dictionary. How to say responsibility. Powered by MaryTTS, Wiktionary