Zhengming, the rectification of names, is the Confucian claim that a healthy society rests on words meaning what they should, on the match between the names people carry and the realities behind them. In a famous passage of the Analects, a disciple asks what Confucius would put first if given charge of a state, and he answers: rectify names. The reasoning follows a chain.
If the ruler is genuinely a ruler, the minister genuinely a minister, the father a father and the son a son, each actually being what the title requires, the social order holds. But when names and realities drift apart, language no longer carries authority; when language fails, affairs miscarry; when affairs miscarry, ritual and justice go astray; and in the end, Confucius says, the common people "have nowhere to put hand or foot." The doctrine binds language, morality and government into one: a name like "father" is not a mere label but a standard to be lived up to, and reform begins by measuring conduct against the names it claims. Later Chinese thinkers made zhengming a subject of sustained philosophical argument.