adjective Having the duty of taking care of something; answerable for an act performed or for its consequences; accountable; amenable, especially legally or politically.
Parents are responsible for their child's behaviour.
adjective Being a primary cause of a situation or action and thus able to be blamed or credited for it.
Who is responsible for this mess?
adjective Answerable to (a superior).
adjective Involving important duties; involving a degree of personal accountability on the part of the person concerned.
She has a responsible position in the firm.
adjective Having good judgment in decision-making.
adjective Able to be trusted; reliable; trustworthy.
He looks like a responsible guy.
adjective Capable of rational conduct and thus morally accountable for one's behavior.
noun The person who bears the responsibility for something.