Which verb is synonymous with 'rescind'?

The verb 'rescind' means to revoke, cancel, or repeal a law, order, or agreement. Choosing 'annul' as the synonymous option is appropriate because 'annul' also signifies the act of declaring something invalid or void, particularly in legal contexts such as marriage and contracts. Thus, when you annul an agreement, you are effectively rescinding it, which captures the essence of removing or invalidating something that was previously in effect. This connection firmly establishes 'annul' as the correct synonym for 'rescind.'