rescind

This term carries a heavy weight of officialdom and legal authority. It is almost exclusively used in formal contexts, such as government decrees, corporate policies, or judicial rulings, where a decision is not just changed but completely wiped away as if it were never in effect. Unlike "cancel," which can be used for a casual appointment or a subscription, "rescind" implies the exercise of power to nullify a formal mandate. It suggests a reversal of a previous official act, often following a period of protest or a discovery of error.