countermand
🇺🇸
/ˈkaʊntərmænd/
🇬🇧
/ˌkaʊntəˈmɑːnd/
To reverse or cancel an order or decision.
The general decided to countermand the previous order and told his troops to retreat.
将军决定撤销之前的命令,告诉他的部队撤退。