Definition of responsibleness in English:

responsibleness

noun

See responsible

‘That aside, the responsibleness the council has shown would be required of it under the provisions of the Local Government Act 2002, which other speakers have talked about, too.’
  • ‘He could be distant, private, sensitive, fiery, but he was a man also governed by impressive kindness and responsibleness.’
  • ‘In fact, freedom is in danger of degenerating into mere arbitrariness unless it is lived in terms of responsibleness.’