declare null and void; make ineffective

the act of nullifying; making null and void; counteracting or overriding the effect or force of something

the states'-rights doctrine that a state can refuse to recognize or to enforce a federal law passed by the United States Congress

an official who can invalidate or nullify

an advocate of nullification; someone who believes that a state can resist federal laws

annul (a legal decision)

invalidate by judicial action

printing: cancel, as of a correction or deletion