督促 (dū cù) means 'to urge someone to complete a task' with an added sense of supervision and accountability — you're not just reminding them, you're monitoring progress. It's more formal than 催 (cuī, a simple 'hurry up') and carries a stronger sense of authority than 催促 (cuī cù, a neutral 'urge'). 敦促 (dūn cù) is similar but used in formal/diplomatic contexts, while 鞭策 (biān cè) focuses on spurring self-improvement rather than task completion.