Repeal/rɪˈpiːl/ Definition 1 of 2Pro Tip 1/3Legal Authority Repeal is an official action, usually by a government or other authority. The Supreme Court has the authority to repeal federal laws. Pro Tip 2/3Formal Context Use 'repeal' in formal discussions or writings about laws and policies. Legislators debated on whether to repeal the obsolete regulation. Pro Tip 3/3Complete Cancellation 'Repeal' means to completely remove a law, not just modify it. Activists demanded to repeal the act, not just amend it.