尽责 (jìn zé) is a verb meaning 'to fulfill one's duty' or 'to discharge one's responsibilities conscientiously.' The character 尽 (jìn) means 'to exhaust,' 'to use fully,' or 'to carry out completely,' while 责 (zé) means 'duty,' 'responsibility,' or 'obligation.' Together, they convey the idea of fully carrying out what one is morally or professionally obligated to do. It emphasizes thoroughness, sincerity, and accountability—not just doing a task, but doing it with care and commitment.

This word is commonly used in formal, professional, or ethical contexts: workplace performance reviews, civic discourse, education, or discussions about moral conduct. It often appears in written Chinese—such as official documents, news reports, or speeches—and less frequently in casual speech, where simpler phrases like '负责任' (fù zé rèn) may be preferred. It carries a respectful, slightly solemn tone and implies integrity and reliability.