The count was not angry even when they told him that Natasha had countermanded an order of his, and the servants now came to her to ask whether a cart was sufficiently loaded, and whether it might be corded up.
There are no more uses of "countermand" in the book.
Show samples from other sources
She countermanded the order.
Mother had ordered me not to tell anyone about the curse, but Mandy could countermand the order so I’d be able to tell Char.