IPA: /rɪˈspɒnsəblnəs/
KK: /rɪˈspɑnsəblnəs/
The condition of being accountable for something or having a duty to take care of something.
Her responsibleness in managing the project impressed everyone on the team.
Responsibleness → It is formed from "responsible" (from Latin "responsabilis", meaning answerable or accountable) and the suffix "-ness" (meaning the state or quality of). The word "responsibleness" refers to the state of being accountable or answerable for something.
Think of being 'answerable' ('responsible') for your actions, and the '-ness' shows it’s about the quality of that accountability.