整肃 (zhěng sù) is a formal, written verb meaning 'to rectify and discipline' — especially within an organization, institution, or system. It combines 整 (zhěng), meaning 'to organize, put in order, or rectify', and 肃 (sù), meaning 'to make solemn, stern, or strict' — together conveying the idea of restoring order through rigorous correction and enforcement of standards. The term implies authoritative action, often by leadership or regulatory bodies, to eliminate corruption, inefficiency, or misconduct.

This word is commonly used in political, military, corporate, or administrative contexts — for example, when a government launches a campaign to clean up bureaucratic practices or when a company restructures its management to enforce accountability. It carries a serious, top-down connotation and rarely appears in casual speech. Because it suggests both structural reform and punitive measures, it’s frequently paired with nouns like 风气 (work style), 纪律 (discipline), or 秩序 (order). Its tone is formal and somewhat weighty, often appearing in official documents, news reports, or policy statements.