This is the 14299th most frequent Russian word.
ответственный
Responsible.
Describes someone who takes their obligations seriously and performs them reliably.
Он очень ответственный человек.
He is a very responsible person.
Indicates that someone has been assigned with the duty or obligation to ensure a task is completed.
В этот раз я ответственный за организацию встречи.
This time, I am responsible for organizing the meeting.
Describes acting in a mature, reliable, and conscientious manner in various contexts.